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Diffstat (limited to 'test/CodeGen/AArch64/ldst-opt.ll')
| -rw-r--r-- | test/CodeGen/AArch64/ldst-opt.ll | 767 |
1 files changed, 767 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/ldst-opt.ll b/test/CodeGen/AArch64/ldst-opt.ll new file mode 100644 index 000000000000..e4f4295c8503 --- /dev/null +++ b/test/CodeGen/AArch64/ldst-opt.ll @@ -0,0 +1,767 @@ +; RUN: llc -mtriple=aarch64-linux-gnu -aarch64-atomic-cfg-tidy=0 -verify-machineinstrs -o - %s | FileCheck %s + +; This file contains tests for the AArch64 load/store optimizer. + +%padding = type { i8*, i8*, i8*, i8* } +%s.word = type { i32, i32 } +%s.doubleword = type { i64, i32 } +%s.quadword = type { fp128, i32 } +%s.float = type { float, i32 } +%s.double = type { double, i32 } +%struct.word = type { %padding, %s.word } +%struct.doubleword = type { %padding, %s.doubleword } +%struct.quadword = type { %padding, %s.quadword } +%struct.float = type { %padding, %s.float } +%struct.double = type { %padding, %s.double } + +; Check the following transform: +; +; (ldr|str) X, [x0, #32] +; ... +; add x0, x0, #32 +; -> +; (ldr|str) X, [x0, #32]! +; +; with X being either w1, x1, s0, d0 or q0. + +declare void @bar_word(%s.word*, i32) + +define void @load-pre-indexed-word(%struct.word* %ptr) nounwind { +; CHECK-LABEL: load-pre-indexed-word +; CHECK: ldr w{{[0-9]+}}, [x{{[0-9]+}}, #32]! +entry: + %a = getelementptr inbounds %struct.word* %ptr, i64 0, i32 1, i32 0 + %add = load i32* %a, align 4 + br label %bar +bar: + %c = getelementptr inbounds %struct.word* %ptr, i64 0, i32 1 + tail call void @bar_word(%s.word* %c, i32 %add) + ret void +} + +define void @store-pre-indexed-word(%struct.word* %ptr, i32 %val) nounwind { +; CHECK-LABEL: store-pre-indexed-word +; CHECK: str w{{[0-9]+}}, [x{{[0-9]+}}, #32]! +entry: + %a = getelementptr inbounds %struct.word* %ptr, i64 0, i32 1, i32 0 + store i32 %val, i32* %a, align 4 + br label %bar +bar: + %c = getelementptr inbounds %struct.word* %ptr, i64 0, i32 1 + tail call void @bar_word(%s.word* %c, i32 %val) + ret void +} + +declare void @bar_doubleword(%s.doubleword*, i64) + +define void @load-pre-indexed-doubleword(%struct.doubleword* %ptr) nounwind { +; CHECK-LABEL: load-pre-indexed-doubleword +; CHECK: ldr x{{[0-9]+}}, [x{{[0-9]+}}, #32]! +entry: + %a = getelementptr inbounds %struct.doubleword* %ptr, i64 0, i32 1, i32 0 + %add = load i64* %a, align 4 + br label %bar +bar: + %c = getelementptr inbounds %struct.doubleword* %ptr, i64 0, i32 1 + tail call void @bar_doubleword(%s.doubleword* %c, i64 %add) + ret void +} + +define void @store-pre-indexed-doubleword(%struct.doubleword* %ptr, i64 %val) nounwind { +; CHECK-LABEL: store-pre-indexed-doubleword +; CHECK: str x{{[0-9]+}}, [x{{[0-9]+}}, #32]! +entry: + %a = getelementptr inbounds %struct.doubleword* %ptr, i64 0, i32 1, i32 0 + store i64 %val, i64* %a, align 4 + br label %bar +bar: + %c = getelementptr inbounds %struct.doubleword* %ptr, i64 0, i32 1 + tail call void @bar_doubleword(%s.doubleword* %c, i64 %val) + ret void +} + +declare void @bar_quadword(%s.quadword*, fp128) + +define void @load-pre-indexed-quadword(%struct.quadword* %ptr) nounwind { +; CHECK-LABEL: load-pre-indexed-quadword +; CHECK: ldr q{{[0-9]+}}, [x{{[0-9]+}}, #32]! +entry: + %a = getelementptr inbounds %struct.quadword* %ptr, i64 0, i32 1, i32 0 + %add = load fp128* %a, align 4 + br label %bar +bar: + %c = getelementptr inbounds %struct.quadword* %ptr, i64 0, i32 1 + tail call void @bar_quadword(%s.quadword* %c, fp128 %add) + ret void +} + +define void @store-pre-indexed-quadword(%struct.quadword* %ptr, fp128 %val) nounwind { +; CHECK-LABEL: store-pre-indexed-quadword +; CHECK: str q{{[0-9]+}}, [x{{[0-9]+}}, #32]! +entry: + %a = getelementptr inbounds %struct.quadword* %ptr, i64 0, i32 1, i32 0 + store fp128 %val, fp128* %a, align 4 + br label %bar +bar: + %c = getelementptr inbounds %struct.quadword* %ptr, i64 0, i32 1 + tail call void @bar_quadword(%s.quadword* %c, fp128 %val) + ret void +} + +declare void @bar_float(%s.float*, float) + +define void @load-pre-indexed-float(%struct.float* %ptr) nounwind { +; CHECK-LABEL: load-pre-indexed-float +; CHECK: ldr s{{[0-9]+}}, [x{{[0-9]+}}, #32]! +entry: + %a = getelementptr inbounds %struct.float* %ptr, i64 0, i32 1, i32 0 + %add = load float* %a, align 4 + br label %bar +bar: + %c = getelementptr inbounds %struct.float* %ptr, i64 0, i32 1 + tail call void @bar_float(%s.float* %c, float %add) + ret void +} + +define void @store-pre-indexed-float(%struct.float* %ptr, float %val) nounwind { +; CHECK-LABEL: store-pre-indexed-float +; CHECK: str s{{[0-9]+}}, [x{{[0-9]+}}, #32]! +entry: + %a = getelementptr inbounds %struct.float* %ptr, i64 0, i32 1, i32 0 + store float %val, float* %a, align 4 + br label %bar +bar: + %c = getelementptr inbounds %struct.float* %ptr, i64 0, i32 1 + tail call void @bar_float(%s.float* %c, float %val) + ret void +} + +declare void @bar_double(%s.double*, double) + +define void @load-pre-indexed-double(%struct.double* %ptr) nounwind { +; CHECK-LABEL: load-pre-indexed-double +; CHECK: ldr d{{[0-9]+}}, [x{{[0-9]+}}, #32]! +entry: + %a = getelementptr inbounds %struct.double* %ptr, i64 0, i32 1, i32 0 + %add = load double* %a, align 4 + br label %bar +bar: + %c = getelementptr inbounds %struct.double* %ptr, i64 0, i32 1 + tail call void @bar_double(%s.double* %c, double %add) + ret void +} + +define void @store-pre-indexed-double(%struct.double* %ptr, double %val) nounwind { +; CHECK-LABEL: store-pre-indexed-double +; CHECK: str d{{[0-9]+}}, [x{{[0-9]+}}, #32]! +entry: + %a = getelementptr inbounds %struct.double* %ptr, i64 0, i32 1, i32 0 + store double %val, double* %a, align 4 + br label %bar +bar: + %c = getelementptr inbounds %struct.double* %ptr, i64 0, i32 1 + tail call void @bar_double(%s.double* %c, double %val) + ret void +} + +; Check the following transform: +; +; add x8, x8, #16 +; ... +; ldr X, [x8] +; -> +; ldr X, [x8, #16]! +; +; with X being either w0, x0, s0, d0 or q0. + +%pre.struct.i32 = type { i32, i32, i32} +%pre.struct.i64 = type { i32, i64, i64} +%pre.struct.i128 = type { i32, <2 x i64>, <2 x i64>} +%pre.struct.float = type { i32, float, float} +%pre.struct.double = type { i32, double, double} + +define i32 @load-pre-indexed-word2(%pre.struct.i32** %this, i1 %cond, + %pre.struct.i32* %load2) nounwind { +; CHECK-LABEL: load-pre-indexed-word2 +; CHECK: ldr w{{[0-9]+}}, [x{{[0-9]+}}, #4]! + br i1 %cond, label %if.then, label %if.end +if.then: + %load1 = load %pre.struct.i32** %this + %gep1 = getelementptr inbounds %pre.struct.i32* %load1, i64 0, i32 1 + br label %return +if.end: + %gep2 = getelementptr inbounds %pre.struct.i32* %load2, i64 0, i32 2 + br label %return +return: + %retptr = phi i32* [ %gep1, %if.then ], [ %gep2, %if.end ] + %ret = load i32* %retptr + ret i32 %ret +} + +define i64 @load-pre-indexed-doubleword2(%pre.struct.i64** %this, i1 %cond, + %pre.struct.i64* %load2) nounwind { +; CHECK-LABEL: load-pre-indexed-doubleword2 +; CHECK: ldr x{{[0-9]+}}, [x{{[0-9]+}}, #8]! + br i1 %cond, label %if.then, label %if.end +if.then: + %load1 = load %pre.struct.i64** %this + %gep1 = getelementptr inbounds %pre.struct.i64* %load1, i64 0, i32 1 + br label %return +if.end: + %gep2 = getelementptr inbounds %pre.struct.i64* %load2, i64 0, i32 2 + br label %return +return: + %retptr = phi i64* [ %gep1, %if.then ], [ %gep2, %if.end ] + %ret = load i64* %retptr + ret i64 %ret +} + +define <2 x i64> @load-pre-indexed-quadword2(%pre.struct.i128** %this, i1 %cond, + %pre.struct.i128* %load2) nounwind { +; CHECK-LABEL: load-pre-indexed-quadword2 +; CHECK: ldr q{{[0-9]+}}, [x{{[0-9]+}}, #16]! + br i1 %cond, label %if.then, label %if.end +if.then: + %load1 = load %pre.struct.i128** %this + %gep1 = getelementptr inbounds %pre.struct.i128* %load1, i64 0, i32 1 + br label %return +if.end: + %gep2 = getelementptr inbounds %pre.struct.i128* %load2, i64 0, i32 2 + br label %return +return: + %retptr = phi <2 x i64>* [ %gep1, %if.then ], [ %gep2, %if.end ] + %ret = load <2 x i64>* %retptr + ret <2 x i64> %ret +} + +define float @load-pre-indexed-float2(%pre.struct.float** %this, i1 %cond, + %pre.struct.float* %load2) nounwind { +; CHECK-LABEL: load-pre-indexed-float2 +; CHECK: ldr s{{[0-9]+}}, [x{{[0-9]+}}, #4]! + br i1 %cond, label %if.then, label %if.end +if.then: + %load1 = load %pre.struct.float** %this + %gep1 = getelementptr inbounds %pre.struct.float* %load1, i64 0, i32 1 + br label %return +if.end: + %gep2 = getelementptr inbounds %pre.struct.float* %load2, i64 0, i32 2 + br label %return +return: + %retptr = phi float* [ %gep1, %if.then ], [ %gep2, %if.end ] + %ret = load float* %retptr + ret float %ret +} + +define double @load-pre-indexed-double2(%pre.struct.double** %this, i1 %cond, + %pre.struct.double* %load2) nounwind { +; CHECK-LABEL: load-pre-indexed-double2 +; CHECK: ldr d{{[0-9]+}}, [x{{[0-9]+}}, #8]! + br i1 %cond, label %if.then, label %if.end +if.then: + %load1 = load %pre.struct.double** %this + %gep1 = getelementptr inbounds %pre.struct.double* %load1, i64 0, i32 1 + br label %return +if.end: + %gep2 = getelementptr inbounds %pre.struct.double* %load2, i64 0, i32 2 + br label %return +return: + %retptr = phi double* [ %gep1, %if.then ], [ %gep2, %if.end ] + %ret = load double* %retptr + ret double %ret +} + +; Check the following transform: +; +; add x8, x8, #16 +; ... +; str X, [x8] +; -> +; str X, [x8, #16]! +; +; with X being either w0, x0, s0, d0 or q0. + +define void @store-pre-indexed-word2(%pre.struct.i32** %this, i1 %cond, + %pre.struct.i32* %load2, + i32 %val) nounwind { +; CHECK-LABEL: store-pre-indexed-word2 +; CHECK: str w{{[0-9]+}}, [x{{[0-9]+}}, #4]! + br i1 %cond, label %if.then, label %if.end +if.then: + %load1 = load %pre.struct.i32** %this + %gep1 = getelementptr inbounds %pre.struct.i32* %load1, i64 0, i32 1 + br label %return +if.end: + %gep2 = getelementptr inbounds %pre.struct.i32* %load2, i64 0, i32 2 + br label %return +return: + %retptr = phi i32* [ %gep1, %if.then ], [ %gep2, %if.end ] + store i32 %val, i32* %retptr + ret void +} + +define void @store-pre-indexed-doubleword2(%pre.struct.i64** %this, i1 %cond, + %pre.struct.i64* %load2, + i64 %val) nounwind { +; CHECK-LABEL: store-pre-indexed-doubleword2 +; CHECK: str x{{[0-9]+}}, [x{{[0-9]+}}, #8]! + br i1 %cond, label %if.then, label %if.end +if.then: + %load1 = load %pre.struct.i64** %this + %gep1 = getelementptr inbounds %pre.struct.i64* %load1, i64 0, i32 1 + br label %return +if.end: + %gep2 = getelementptr inbounds %pre.struct.i64* %load2, i64 0, i32 2 + br label %return +return: + %retptr = phi i64* [ %gep1, %if.then ], [ %gep2, %if.end ] + store i64 %val, i64* %retptr + ret void +} + +define void @store-pre-indexed-quadword2(%pre.struct.i128** %this, i1 %cond, + %pre.struct.i128* %load2, + <2 x i64> %val) nounwind { +; CHECK-LABEL: store-pre-indexed-quadword2 +; CHECK: str q{{[0-9]+}}, [x{{[0-9]+}}, #16]! + br i1 %cond, label %if.then, label %if.end +if.then: + %load1 = load %pre.struct.i128** %this + %gep1 = getelementptr inbounds %pre.struct.i128* %load1, i64 0, i32 1 + br label %return +if.end: + %gep2 = getelementptr inbounds %pre.struct.i128* %load2, i64 0, i32 2 + br label %return +return: + %retptr = phi <2 x i64>* [ %gep1, %if.then ], [ %gep2, %if.end ] + store <2 x i64> %val, <2 x i64>* %retptr + ret void +} + +define void @store-pre-indexed-float2(%pre.struct.float** %this, i1 %cond, + %pre.struct.float* %load2, + float %val) nounwind { +; CHECK-LABEL: store-pre-indexed-float2 +; CHECK: str s{{[0-9]+}}, [x{{[0-9]+}}, #4]! + br i1 %cond, label %if.then, label %if.end +if.then: + %load1 = load %pre.struct.float** %this + %gep1 = getelementptr inbounds %pre.struct.float* %load1, i64 0, i32 1 + br label %return +if.end: + %gep2 = getelementptr inbounds %pre.struct.float* %load2, i64 0, i32 2 + br label %return +return: + %retptr = phi float* [ %gep1, %if.then ], [ %gep2, %if.end ] + store float %val, float* %retptr + ret void +} + +define void @store-pre-indexed-double2(%pre.struct.double** %this, i1 %cond, + %pre.struct.double* %load2, + double %val) nounwind { +; CHECK-LABEL: store-pre-indexed-double2 +; CHECK: str d{{[0-9]+}}, [x{{[0-9]+}}, #8]! + br i1 %cond, label %if.then, label %if.end +if.then: + %load1 = load %pre.struct.double** %this + %gep1 = getelementptr inbounds %pre.struct.double* %load1, i64 0, i32 1 + br label %return +if.end: + %gep2 = getelementptr inbounds %pre.struct.double* %load2, i64 0, i32 2 + br label %return +return: + %retptr = phi double* [ %gep1, %if.then ], [ %gep2, %if.end ] + store double %val, double* %retptr + ret void +} + +; Check the following transform: +; +; ldr X, [x20] +; ... +; add x20, x20, #32 +; -> +; ldr X, [x20], #32 +; +; with X being either w0, x0, s0, d0 or q0. + +define void @load-post-indexed-word(i32* %array, i64 %count) nounwind { +; CHECK-LABEL: load-post-indexed-word +; CHECK: ldr w{{[0-9]+}}, [x{{[0-9]+}}], #16 +entry: + %gep1 = getelementptr i32* %array, i64 2 + br label %body + +body: + %iv2 = phi i32* [ %gep3, %body ], [ %gep1, %entry ] + %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ] + %gep2 = getelementptr i32* %iv2, i64 -1 + %load = load i32* %gep2 + call void @use-word(i32 %load) + %load2 = load i32* %iv2 + call void @use-word(i32 %load2) + %iv.next = add i64 %iv, -4 + %gep3 = getelementptr i32* %iv2, i64 4 + %cond = icmp eq i64 %iv.next, 0 + br i1 %cond, label %exit, label %body + +exit: + ret void +} + +define void @load-post-indexed-doubleword(i64* %array, i64 %count) nounwind { +; CHECK-LABEL: load-post-indexed-doubleword +; CHECK: ldr x{{[0-9]+}}, [x{{[0-9]+}}], #32 +entry: + %gep1 = getelementptr i64* %array, i64 2 + br label %body + +body: + %iv2 = phi i64* [ %gep3, %body ], [ %gep1, %entry ] + %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ] + %gep2 = getelementptr i64* %iv2, i64 -1 + %load = load i64* %gep2 + call void @use-doubleword(i64 %load) + %load2 = load i64* %iv2 + call void @use-doubleword(i64 %load2) + %iv.next = add i64 %iv, -4 + %gep3 = getelementptr i64* %iv2, i64 4 + %cond = icmp eq i64 %iv.next, 0 + br i1 %cond, label %exit, label %body + +exit: + ret void +} + +define void @load-post-indexed-quadword(<2 x i64>* %array, i64 %count) nounwind { +; CHECK-LABEL: load-post-indexed-quadword +; CHECK: ldr q{{[0-9]+}}, [x{{[0-9]+}}], #64 +entry: + %gep1 = getelementptr <2 x i64>* %array, i64 2 + br label %body + +body: + %iv2 = phi <2 x i64>* [ %gep3, %body ], [ %gep1, %entry ] + %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ] + %gep2 = getelementptr <2 x i64>* %iv2, i64 -1 + %load = load <2 x i64>* %gep2 + call void @use-quadword(<2 x i64> %load) + %load2 = load <2 x i64>* %iv2 + call void @use-quadword(<2 x i64> %load2) + %iv.next = add i64 %iv, -4 + %gep3 = getelementptr <2 x i64>* %iv2, i64 4 + %cond = icmp eq i64 %iv.next, 0 + br i1 %cond, label %exit, label %body + +exit: + ret void +} + +define void @load-post-indexed-float(float* %array, i64 %count) nounwind { +; CHECK-LABEL: load-post-indexed-float +; CHECK: ldr s{{[0-9]+}}, [x{{[0-9]+}}], #16 +entry: + %gep1 = getelementptr float* %array, i64 2 + br label %body + +body: + %iv2 = phi float* [ %gep3, %body ], [ %gep1, %entry ] + %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ] + %gep2 = getelementptr float* %iv2, i64 -1 + %load = load float* %gep2 + call void @use-float(float %load) + %load2 = load float* %iv2 + call void @use-float(float %load2) + %iv.next = add i64 %iv, -4 + %gep3 = getelementptr float* %iv2, i64 4 + %cond = icmp eq i64 %iv.next, 0 + br i1 %cond, label %exit, label %body + +exit: + ret void +} + +define void @load-post-indexed-double(double* %array, i64 %count) nounwind { +; CHECK-LABEL: load-post-indexed-double +; CHECK: ldr d{{[0-9]+}}, [x{{[0-9]+}}], #32 +entry: + %gep1 = getelementptr double* %array, i64 2 + br label %body + +body: + %iv2 = phi double* [ %gep3, %body ], [ %gep1, %entry ] + %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ] + %gep2 = getelementptr double* %iv2, i64 -1 + %load = load double* %gep2 + call void @use-double(double %load) + %load2 = load double* %iv2 + call void @use-double(double %load2) + %iv.next = add i64 %iv, -4 + %gep3 = getelementptr double* %iv2, i64 4 + %cond = icmp eq i64 %iv.next, 0 + br i1 %cond, label %exit, label %body + +exit: + ret void +} + +; Check the following transform: +; +; str X, [x20] +; ... +; add x20, x20, #32 +; -> +; str X, [x20], #32 +; +; with X being either w0, x0, s0, d0 or q0. + +define void @store-post-indexed-word(i32* %array, i64 %count, i32 %val) nounwind { +; CHECK-LABEL: store-post-indexed-word +; CHECK: str w{{[0-9]+}}, [x{{[0-9]+}}], #16 +entry: + %gep1 = getelementptr i32* %array, i64 2 + br label %body + +body: + %iv2 = phi i32* [ %gep3, %body ], [ %gep1, %entry ] + %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ] + %gep2 = getelementptr i32* %iv2, i64 -1 + %load = load i32* %gep2 + call void @use-word(i32 %load) + store i32 %val, i32* %iv2 + %iv.next = add i64 %iv, -4 + %gep3 = getelementptr i32* %iv2, i64 4 + %cond = icmp eq i64 %iv.next, 0 + br i1 %cond, label %exit, label %body + +exit: + ret void +} + +define void @store-post-indexed-doubleword(i64* %array, i64 %count, i64 %val) nounwind { +; CHECK-LABEL: store-post-indexed-doubleword +; CHECK: str x{{[0-9]+}}, [x{{[0-9]+}}], #32 +entry: + %gep1 = getelementptr i64* %array, i64 2 + br label %body + +body: + %iv2 = phi i64* [ %gep3, %body ], [ %gep1, %entry ] + %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ] + %gep2 = getelementptr i64* %iv2, i64 -1 + %load = load i64* %gep2 + call void @use-doubleword(i64 %load) + store i64 %val, i64* %iv2 + %iv.next = add i64 %iv, -4 + %gep3 = getelementptr i64* %iv2, i64 4 + %cond = icmp eq i64 %iv.next, 0 + br i1 %cond, label %exit, label %body + +exit: + ret void +} + +define void @store-post-indexed-quadword(<2 x i64>* %array, i64 %count, <2 x i64> %val) nounwind { +; CHECK-LABEL: store-post-indexed-quadword +; CHECK: str q{{[0-9]+}}, [x{{[0-9]+}}], #64 +entry: + %gep1 = getelementptr <2 x i64>* %array, i64 2 + br label %body + +body: + %iv2 = phi <2 x i64>* [ %gep3, %body ], [ %gep1, %entry ] + %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ] + %gep2 = getelementptr <2 x i64>* %iv2, i64 -1 + %load = load <2 x i64>* %gep2 + call void @use-quadword(<2 x i64> %load) + store <2 x i64> %val, <2 x i64>* %iv2 + %iv.next = add i64 %iv, -4 + %gep3 = getelementptr <2 x i64>* %iv2, i64 4 + %cond = icmp eq i64 %iv.next, 0 + br i1 %cond, label %exit, label %body + +exit: + ret void +} + +define void @store-post-indexed-float(float* %array, i64 %count, float %val) nounwind { +; CHECK-LABEL: store-post-indexed-float +; CHECK: str s{{[0-9]+}}, [x{{[0-9]+}}], #16 +entry: + %gep1 = getelementptr float* %array, i64 2 + br label %body + +body: + %iv2 = phi float* [ %gep3, %body ], [ %gep1, %entry ] + %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ] + %gep2 = getelementptr float* %iv2, i64 -1 + %load = load float* %gep2 + call void @use-float(float %load) + store float %val, float* %iv2 + %iv.next = add i64 %iv, -4 + %gep3 = getelementptr float* %iv2, i64 4 + %cond = icmp eq i64 %iv.next, 0 + br i1 %cond, label %exit, label %body + +exit: + ret void +} + +define void @store-post-indexed-double(double* %array, i64 %count, double %val) nounwind { +; CHECK-LABEL: store-post-indexed-double +; CHECK: str d{{[0-9]+}}, [x{{[0-9]+}}], #32 +entry: + %gep1 = getelementptr double* %array, i64 2 + br label %body + +body: + %iv2 = phi double* [ %gep3, %body ], [ %gep1, %entry ] + %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ] + %gep2 = getelementptr double* %iv2, i64 -1 + %load = load double* %gep2 + call void @use-double(double %load) + store double %val, double* %iv2 + %iv.next = add i64 %iv, -4 + %gep3 = getelementptr double* %iv2, i64 4 + %cond = icmp eq i64 %iv.next, 0 + br i1 %cond, label %exit, label %body + +exit: + ret void +} + +declare void @use-word(i32) +declare void @use-doubleword(i64) +declare void @use-quadword(<2 x i64>) +declare void @use-float(float) +declare void @use-double(double) + +; Check the following transform: +; +; (ldr|str) X, [x20] +; ... +; sub x20, x20, #16 +; -> +; (ldr|str) X, [x20], #-16 +; +; with X being either w0, x0, s0, d0 or q0. + +define void @post-indexed-sub-word(i32* %a, i32* %b, i64 %count) nounwind { +; CHECK-LABEL: post-indexed-sub-word +; CHECK: ldr w{{[0-9]+}}, [x{{[0-9]+}}], #-8 +; CHECK: str w{{[0-9]+}}, [x{{[0-9]+}}], #-8 + br label %for.body +for.body: + %phi1 = phi i32* [ %gep4, %for.body ], [ %b, %0 ] + %phi2 = phi i32* [ %gep3, %for.body ], [ %a, %0 ] + %i = phi i64 [ %dec.i, %for.body], [ %count, %0 ] + %gep1 = getelementptr i32* %phi1, i64 -1 + %load1 = load i32* %gep1 + %gep2 = getelementptr i32* %phi2, i64 -1 + store i32 %load1, i32* %gep2 + %load2 = load i32* %phi1 + store i32 %load2, i32* %phi2 + %dec.i = add nsw i64 %i, -1 + %gep3 = getelementptr i32* %phi2, i64 -2 + %gep4 = getelementptr i32* %phi1, i64 -2 + %cond = icmp sgt i64 %dec.i, 0 + br i1 %cond, label %for.body, label %end +end: + ret void +} + +define void @post-indexed-sub-doubleword(i64* %a, i64* %b, i64 %count) nounwind { +; CHECK-LABEL: post-indexed-sub-doubleword +; CHECK: ldr x{{[0-9]+}}, [x{{[0-9]+}}], #-16 +; CHECK: str x{{[0-9]+}}, [x{{[0-9]+}}], #-16 + br label %for.body +for.body: + %phi1 = phi i64* [ %gep4, %for.body ], [ %b, %0 ] + %phi2 = phi i64* [ %gep3, %for.body ], [ %a, %0 ] + %i = phi i64 [ %dec.i, %for.body], [ %count, %0 ] + %gep1 = getelementptr i64* %phi1, i64 -1 + %load1 = load i64* %gep1 + %gep2 = getelementptr i64* %phi2, i64 -1 + store i64 %load1, i64* %gep2 + %load2 = load i64* %phi1 + store i64 %load2, i64* %phi2 + %dec.i = add nsw i64 %i, -1 + %gep3 = getelementptr i64* %phi2, i64 -2 + %gep4 = getelementptr i64* %phi1, i64 -2 + %cond = icmp sgt i64 %dec.i, 0 + br i1 %cond, label %for.body, label %end +end: + ret void +} + +define void @post-indexed-sub-quadword(<2 x i64>* %a, <2 x i64>* %b, i64 %count) nounwind { +; CHECK-LABEL: post-indexed-sub-quadword +; CHECK: ldr q{{[0-9]+}}, [x{{[0-9]+}}], #-32 +; CHECK: str q{{[0-9]+}}, [x{{[0-9]+}}], #-32 + br label %for.body +for.body: + %phi1 = phi <2 x i64>* [ %gep4, %for.body ], [ %b, %0 ] + %phi2 = phi <2 x i64>* [ %gep3, %for.body ], [ %a, %0 ] + %i = phi i64 [ %dec.i, %for.body], [ %count, %0 ] + %gep1 = getelementptr <2 x i64>* %phi1, i64 -1 + %load1 = load <2 x i64>* %gep1 + %gep2 = getelementptr <2 x i64>* %phi2, i64 -1 + store <2 x i64> %load1, <2 x i64>* %gep2 + %load2 = load <2 x i64>* %phi1 + store <2 x i64> %load2, <2 x i64>* %phi2 + %dec.i = add nsw i64 %i, -1 + %gep3 = getelementptr <2 x i64>* %phi2, i64 -2 + %gep4 = getelementptr <2 x i64>* %phi1, i64 -2 + %cond = icmp sgt i64 %dec.i, 0 + br i1 %cond, label %for.body, label %end +end: + ret void +} + +define void @post-indexed-sub-float(float* %a, float* %b, i64 %count) nounwind { +; CHECK-LABEL: post-indexed-sub-float +; CHECK: ldr s{{[0-9]+}}, [x{{[0-9]+}}], #-8 +; CHECK: str s{{[0-9]+}}, [x{{[0-9]+}}], #-8 + br label %for.body +for.body: + %phi1 = phi float* [ %gep4, %for.body ], [ %b, %0 ] + %phi2 = phi float* [ %gep3, %for.body ], [ %a, %0 ] + %i = phi i64 [ %dec.i, %for.body], [ %count, %0 ] + %gep1 = getelementptr float* %phi1, i64 -1 + %load1 = load float* %gep1 + %gep2 = getelementptr float* %phi2, i64 -1 + store float %load1, float* %gep2 + %load2 = load float* %phi1 + store float %load2, float* %phi2 + %dec.i = add nsw i64 %i, -1 + %gep3 = getelementptr float* %phi2, i64 -2 + %gep4 = getelementptr float* %phi1, i64 -2 + %cond = icmp sgt i64 %dec.i, 0 + br i1 %cond, label %for.body, label %end +end: + ret void +} + +define void @post-indexed-sub-double(double* %a, double* %b, i64 %count) nounwind { +; CHECK-LABEL: post-indexed-sub-double +; CHECK: ldr d{{[0-9]+}}, [x{{[0-9]+}}], #-16 +; CHECK: str d{{[0-9]+}}, [x{{[0-9]+}}], #-16 + br label %for.body +for.body: + %phi1 = phi double* [ %gep4, %for.body ], [ %b, %0 ] + %phi2 = phi double* [ %gep3, %for.body ], [ %a, %0 ] + %i = phi i64 [ %dec.i, %for.body], [ %count, %0 ] + %gep1 = getelementptr double* %phi1, i64 -1 + %load1 = load double* %gep1 + %gep2 = getelementptr double* %phi2, i64 -1 + store double %load1, double* %gep2 + %load2 = load double* %phi1 + store double %load2, double* %phi2 + %dec.i = add nsw i64 %i, -1 + %gep3 = getelementptr double* %phi2, i64 -2 + %gep4 = getelementptr double* %phi1, i64 -2 + %cond = icmp sgt i64 %dec.i, 0 + br i1 %cond, label %for.body, label %end +end: + ret void +} |