vendor/llvm/llvm-trunk-r304659

1 files changed, 92 insertions, 32 deletions

diff --git a/test/CodeGen/X86/statepoint-live-in.ll b/test/CodeGen/X86/statepoint-live-in.ll
index abe2b0a7acc87..aaa4d7c8422a9 100644
--- a/test/CodeGen/X86/statepoint-live-in.ll
+++ b/test/CodeGen/X86/statepoint-live-in.ll
@@ -1,4 +1,5 @@
-; RUN: llc -O3 < %s | FileCheck %s
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: llc -verify-machineinstrs -O3 < %s | FileCheck %s
 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-apple-macosx10.11.0"
 
@@ -6,38 +7,70 @@ declare void @bar() #0
 declare void @baz()
 
 define void @test1(i32 %a) gc "statepoint-example" {
+; CHECK-LABEL: test1:
+; CHECK:       ## BB#0: ## %entry
+; CHECK-NEXT:    pushq %rax
+; CHECK-NEXT:  Lcfi0:
+; CHECK-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-NEXT:    callq _bar
+; CHECK-NEXT:  Ltmp0:
+; CHECK-NEXT:    popq %rax
+; CHECK-NEXT:    retq
+;
 entry:
 ; We expect the argument to be passed in an extra register to bar
-; CHECK-LABEL: test1
-; CHECK:       pushq	%rax
-; CHECK-NEXT: Lcfi0:
-; CHECK-NEXT:  .cfi_def_cfa_offset 16
-; CHECK-NEXT: callq	_bar
   %statepoint_token1 = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @bar, i32 0, i32 2, i32 0, i32 1, i32 %a)
   ret void
 }
 
 define void @test2(i32 %a, i32 %b) gc "statepoint-example" {
+; CHECK-LABEL: test2:
+; CHECK:       ## BB#0: ## %entry
+; CHECK-NEXT:    pushq %rbp
+; CHECK-NEXT:  Lcfi1:
+; CHECK-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-NEXT:    pushq %rbx
+; CHECK-NEXT:  Lcfi2:
+; CHECK-NEXT:    .cfi_def_cfa_offset 24
+; CHECK-NEXT:    pushq %rax
+; CHECK-NEXT:  Lcfi3:
+; CHECK-NEXT:    .cfi_def_cfa_offset 32
+; CHECK-NEXT:  Lcfi4:
+; CHECK-NEXT:    .cfi_offset %rbx, -24
+; CHECK-NEXT:  Lcfi5:
+; CHECK-NEXT:    .cfi_offset %rbp, -16
+; CHECK-NEXT:    movl %esi, %ebx
+; CHECK-NEXT:    movl %edi, %ebp
+; CHECK-NEXT:    callq _bar
+; CHECK-NEXT:  Ltmp1:
+; CHECK-NEXT:    callq _bar
+; CHECK-NEXT:  Ltmp2:
+; CHECK-NEXT:    addq $8, %rsp
+; CHECK-NEXT:    popq %rbx
+; CHECK-NEXT:    popq %rbp
+; CHECK-NEXT:    retq
+;
 entry:
 ; Because the first call clobbers esi, we have to move the values into
 ; new registers.  Note that they stay in the registers for both calls.
-; CHECK-LABEL: @test2
-; CHECK:       movl	%esi, %ebx
-; CHECK-NEXT:  movl	%edi, %ebp
-; CHECK-NEXT: callq	_bar
   call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @bar, i32 0, i32 2, i32 0, i32 2, i32 %a, i32 %b)
   call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @bar, i32 0, i32 2, i32 0, i32 2, i32 %b, i32 %a)
   ret void
 }
 
 define void @test3(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g, i32 %h, i32 %i) gc "statepoint-example" {
+; CHECK-LABEL: test3:
+; CHECK:       ## BB#0: ## %entry
+; CHECK-NEXT:    pushq %rax
+; CHECK-NEXT:  Lcfi6:
+; CHECK-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-NEXT:    callq _bar
+; CHECK-NEXT:  Ltmp3:
+; CHECK-NEXT:    popq %rax
+; CHECK-NEXT:    retq
+;
 entry:
-; TODO: We should have folded the reload into the statepoint.
-; CHECK-LABEL: @test3
-; CHECK:       	pushq %rax
-; CHECK-NEXT: 	Lcfi
-; CHECK-NEXT:   .cfi_def_cfa_offset 16
-; CHECK-NEXT:   callq	_bar
+; We directly reference the argument slot
   %statepoint_token1 = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @bar, i32 0, i32 2, i32 0, i32 9, i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g, i32 %h, i32 %i)
   ret void
 }
@@ -47,25 +80,39 @@ entry:
 ; also ends up being a good test of whether we can fold loads from immutable
 ; stack slots into the statepoint.
 define void @test4(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g, i32 %h, i32 %i, i32 %j, i32 %k, i32 %l, i32 %m, i32 %n, i32 %o, i32 %p, i32 %q, i32 %r, i32 %s, i32 %t, i32 %u, i32 %v, i32 %w, i32 %x, i32 %y, i32 %z) gc "statepoint-example" {
+; CHECK-LABEL: test4:
+; CHECK:       ## BB#0: ## %entry
+; CHECK-NEXT:    pushq %rax
+; CHECK-NEXT:  Lcfi7:
+; CHECK-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-NEXT:    callq _bar
+; CHECK-NEXT:  Ltmp4:
+; CHECK-NEXT:    popq %rax
+; CHECK-NEXT:    retq
+;
 entry:
-; CHECK-LABEL: test4
-; CHECK:        pushq %rax
-; CHECK-NEXT: 	Lcfi
-; CHECK-NEXT:   .cfi_def_cfa_offset 16
-; CHECK-NEXT:   callq	_bar
   %statepoint_token1 = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @bar, i32 0, i32 2, i32 0, i32 26, i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g, i32 %h, i32 %i, i32 %j, i32 %k, i32 %l, i32 %m, i32 %n, i32 %o, i32 %p, i32 %q, i32 %r, i32 %s, i32 %t, i32 %u, i32 %v, i32 %w, i32 %x, i32 %y, i32 %z)
   ret void
 }
 
 ; A live-through gc-value must be spilled even if it is also a live-in deopt
 ; value.  For live-in, we could technically report the register copy, but from
-; a code quality perspective it's better to reuse the required stack slot so 
+; a code quality perspective it's better to reuse the required stack slot so
 ; as to put less stress on the register allocator for no benefit.
 define  i32 addrspace(1)* @test5(i32 %a, i32 addrspace(1)* %p) gc "statepoint-example" {
+; CHECK-LABEL: test5:
+; CHECK:       ## BB#0: ## %entry
+; CHECK-NEXT:    pushq %rax
+; CHECK-NEXT:  Lcfi8:
+; CHECK-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-NEXT:    movq %rsi, (%rsp)
+; CHECK-NEXT:    callq _bar
+; CHECK-NEXT:  Ltmp5:
+; CHECK-NEXT:    movq (%rsp), %rax
+; CHECK-NEXT:    popq %rcx
+; CHECK-NEXT:    retq
+;
 entry:
-; CHECK-LABEL: test5
-; CHECK:        movq	%rsi, (%rsp)
-; CHECK-NEXT:   callq	_bar
   %token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @bar, i32 0, i32 2, i32 0, i32 1, i32 %a, i32 addrspace(1)* %p, i32 addrspace(1)* %p)
   %p2 = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %token,  i32 9, i32 9)
   ret i32 addrspace(1)* %p2
@@ -73,14 +120,27 @@ entry:
 
 ; Show the interaction of live-through spilling followed by live-in.
 define void @test6(i32 %a) gc "statepoint-example" {
+; CHECK-LABEL: test6:
+; CHECK:       ## BB#0: ## %entry
+; CHECK-NEXT:    pushq %rbx
+; CHECK-NEXT:  Lcfi9:
+; CHECK-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-NEXT:    subq $16, %rsp
+; CHECK-NEXT:  Lcfi10:
+; CHECK-NEXT:    .cfi_def_cfa_offset 32
+; CHECK-NEXT:  Lcfi11:
+; CHECK-NEXT:    .cfi_offset %rbx, -16
+; CHECK-NEXT:    movl %edi, %ebx
+; CHECK-NEXT:    movl %ebx, {{[0-9]+}}(%rsp)
+; CHECK-NEXT:    callq _baz
+; CHECK-NEXT:  Ltmp6:
+; CHECK-NEXT:    callq _bar
+; CHECK-NEXT:  Ltmp7:
+; CHECK-NEXT:    addq $16, %rsp
+; CHECK-NEXT:    popq %rbx
+; CHECK-NEXT:    retq
+;
 entry:
-; TODO: We could have reused the previous spill slot at zero additional cost.
-; CHECK-LABEL: test6
-; CHECK:        movl %edi, %ebx
-; CHECK:        movl %ebx, 12(%rsp)
-; CHECK-NEXT:   callq	_baz
-; CHECK-NEXT:  Ltmp
-; CHECK-NEXT:   callq	_bar
   call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @baz, i32 0, i32 0, i32 0, i32 1, i32 %a)
   call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @bar, i32 0, i32 2, i32 0, i32 1, i32 %a)
   ret void