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-rw-r--r--test/Transforms/InstCombine/cast.ll77
1 files changed, 76 insertions, 1 deletions
diff --git a/test/Transforms/InstCombine/cast.ll b/test/Transforms/InstCombine/cast.ll
index 7a1e7a802dd3..9835d657c9bb 100644
--- a/test/Transforms/InstCombine/cast.ll
+++ b/test/Transforms/InstCombine/cast.ll
@@ -1,5 +1,5 @@
; Tests to make sure elimination of casts is working correctly
-; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep %c | notcast
+; RUN: opt < %s -instcombine -S | FileCheck %s
@inbuf = external global [32832 x i8] ; <[32832 x i8]*> [#uses=1]
@@ -7,6 +7,7 @@ define i32 @test1(i32 %A) {
%c1 = bitcast i32 %A to i32 ; <i32> [#uses=1]
%c2 = bitcast i32 %c1 to i32 ; <i32> [#uses=1]
ret i32 %c2
+; CHECK: ret i32 %A
}
define i64 @test2(i8 %A) {
@@ -14,6 +15,8 @@ define i64 @test2(i8 %A) {
%c2 = zext i16 %c1 to i32 ; <i32> [#uses=1]
%Ret = zext i32 %c2 to i64 ; <i64> [#uses=1]
ret i64 %Ret
+; CHECK: %Ret = zext i8 %A to i64
+; CHECK: ret i64 %Ret
}
; This function should just use bitwise AND
@@ -21,6 +24,8 @@ define i64 @test3(i64 %A) {
%c1 = trunc i64 %A to i8 ; <i8> [#uses=1]
%c2 = zext i8 %c1 to i64 ; <i64> [#uses=1]
ret i64 %c2
+; CHECK: %c2 = and i64 %A, 255
+; CHECK: ret i64 %c2
}
define i32 @test4(i32 %A, i32 %B) {
@@ -30,6 +35,9 @@ define i32 @test4(i32 %A, i32 %B) {
; for the cast elim purpose
%result = zext i8 %c to i32 ; <i32> [#uses=1]
ret i32 %result
+; CHECK: %COND = icmp slt i32 %A, %B
+; CHECK: %result = zext i1 %COND to i32
+; CHECK: ret i32 %result
}
define i32 @test5(i1 %B) {
@@ -38,36 +46,46 @@ define i32 @test5(i1 %B) {
; this cast
%result = zext i8 %c to i32 ; <i32> [#uses=1]
ret i32 %result
+; CHECK: %result = zext i1 %B to i32
+; CHECK: ret i32 %result
}
define i32 @test6(i64 %A) {
%c1 = trunc i64 %A to i32 ; <i32> [#uses=1]
%res = bitcast i32 %c1 to i32 ; <i32> [#uses=1]
ret i32 %res
+; CHECK: %res = trunc i64 %A to i32
+; CHECK: ret i32 %res
}
define i64 @test7(i1 %A) {
%c1 = zext i1 %A to i32 ; <i32> [#uses=1]
%res = sext i32 %c1 to i64 ; <i64> [#uses=1]
ret i64 %res
+; CHECK: %res = zext i1 %A to i64
+; CHECK: ret i64 %res
}
define i64 @test8(i8 %A) {
%c1 = sext i8 %A to i64 ; <i64> [#uses=1]
%res = bitcast i64 %c1 to i64 ; <i64> [#uses=1]
ret i64 %res
+; CHECK: %res = sext i8 %A to i64
+; CHECK: ret i64 %res
}
define i16 @test9(i16 %A) {
%c1 = sext i16 %A to i32 ; <i32> [#uses=1]
%c2 = trunc i32 %c1 to i16 ; <i16> [#uses=1]
ret i16 %c2
+; CHECK: ret i16 %A
}
define i16 @test10(i16 %A) {
%c1 = sext i16 %A to i32 ; <i32> [#uses=1]
%c2 = trunc i32 %c1 to i16 ; <i16> [#uses=1]
ret i16 %c2
+; CHECK: ret i16 %A
}
declare void @varargs(i32, ...)
@@ -76,22 +94,31 @@ define void @test11(i32* %P) {
%c = bitcast i32* %P to i16* ; <i16*> [#uses=1]
call void (i32, ...)* @varargs( i32 5, i16* %c )
ret void
+; CHECK: call void (i32, ...)* @varargs(i32 5, i32* %P)
+; CHECK: ret void
}
define i32* @test12() {
%p = malloc [4 x i8] ; <[4 x i8]*> [#uses=1]
%c = bitcast [4 x i8]* %p to i32* ; <i32*> [#uses=1]
ret i32* %c
+; CHECK: %p = malloc i32
+; CHECK: ret i32* %p
}
+
define i8* @test13(i64 %A) {
%c = getelementptr [0 x i8]* bitcast ([32832 x i8]* @inbuf to [0 x i8]*), i64 0, i64 %A ; <i8*> [#uses=1]
ret i8* %c
+; CHECK: %c = getelementptr [32832 x i8]* @inbuf, i64 0, i64 %A
+; CHECK: ret i8* %c
}
define i1 @test14(i8 %A) {
%c = bitcast i8 %A to i8 ; <i8> [#uses=1]
%X = icmp ult i8 %c, -128 ; <i1> [#uses=1]
ret i1 %X
+; CHECK: %X = icmp sgt i8 %A, -1
+; CHECK: ret i1 %X
}
@@ -105,24 +132,32 @@ define i1 @test14(i8 %A) {
define i1 @test16(i32* %P) {
%c = icmp ne i32* %P, null ; <i1> [#uses=1]
ret i1 %c
+; CHECK: %c = icmp ne i32* %P, null
+; CHECK: ret i1 %c
}
define i16 @test17(i1 %tmp3) {
%c = zext i1 %tmp3 to i32 ; <i32> [#uses=1]
%t86 = trunc i32 %c to i16 ; <i16> [#uses=1]
ret i16 %t86
+; CHECK: %t86 = zext i1 %tmp3 to i16
+; CHECK: ret i16 %t86
}
define i16 @test18(i8 %tmp3) {
%c = sext i8 %tmp3 to i32 ; <i32> [#uses=1]
%t86 = trunc i32 %c to i16 ; <i16> [#uses=1]
ret i16 %t86
+; CHECK: %t86 = sext i8 %tmp3 to i16
+; CHECK: ret i16 %t86
}
define i1 @test19(i32 %X) {
%c = sext i32 %X to i64 ; <i64> [#uses=1]
%Z = icmp slt i64 %c, 12345 ; <i1> [#uses=1]
ret i1 %Z
+; CHECK: %Z = icmp slt i32 %X, 12345
+; CHECK: ret i1 %Z
}
define i1 @test20(i1 %B) {
@@ -130,6 +165,7 @@ define i1 @test20(i1 %B) {
%D = icmp slt i32 %c, -1 ; <i1> [#uses=1]
;; false
ret i1 %D
+; CHECK: ret i1 false
}
define i32 @test21(i32 %X) {
@@ -138,6 +174,8 @@ define i32 @test21(i32 %X) {
%c2 = sext i8 %c1 to i32 ; <i32> [#uses=1]
%RV = and i32 %c2, 255 ; <i32> [#uses=1]
ret i32 %RV
+; CHECK: %c21 = and i32 %X, 255
+; CHECK: ret i32 %c21
}
define i32 @test22(i32 %X) {
@@ -146,6 +184,8 @@ define i32 @test22(i32 %X) {
%c2 = sext i8 %c1 to i32 ; <i32> [#uses=1]
%RV = shl i32 %c2, 24 ; <i32> [#uses=1]
ret i32 %RV
+; CHECK: %RV = shl i32 %X, 24
+; CHECK: ret i32 %RV
}
define i32 @test23(i32 %X) {
@@ -154,6 +194,8 @@ define i32 @test23(i32 %X) {
;; and Z are signed.
%c2 = zext i16 %c1 to i32 ; <i32> [#uses=1]
ret i32 %c2
+; CHECK: %c2 = and i32 %X, 65535
+; CHECK: ret i32 %c2
}
define i1 @test24(i1 %C) {
@@ -161,6 +203,7 @@ define i1 @test24(i1 %C) {
;; Fold cast into select
%c = icmp ne i32 %X, 0 ; <i1> [#uses=1]
ret i1 %c
+; CHECK: ret i1 true
}
define void @test25(i32** %P) {
@@ -168,6 +211,8 @@ define void @test25(i32** %P) {
;; Fold cast into null
store float* null, float** %c
ret void
+; CHECK: store i32* null, i32** %P
+; CHECK: ret void
}
define i32 @test26(float %F) {
@@ -175,16 +220,22 @@ define i32 @test26(float %F) {
%c = fpext float %F to double ; <double> [#uses=1]
%D = fptosi double %c to i32 ; <i32> [#uses=1]
ret i32 %D
+; CHECK: %D = fptosi float %F to i32
+; CHECK: ret i32 %D
}
define [4 x float]* @test27([9 x [4 x float]]* %A) {
%c = bitcast [9 x [4 x float]]* %A to [4 x float]* ; <[4 x float]*> [#uses=1]
ret [4 x float]* %c
+; CHECK: %c = getelementptr inbounds [9 x [4 x float]]* %A, i64 0, i64 0
+; CHECK: ret [4 x float]* %c
}
define float* @test28([4 x float]* %A) {
%c = bitcast [4 x float]* %A to float* ; <float*> [#uses=1]
ret float* %c
+; CHECK: %c = getelementptr inbounds [4 x float]* %A, i64 0, i64 0
+; CHECK: ret float* %c
}
define i32 @test29(i32 %c1, i32 %c2) {
@@ -193,6 +244,9 @@ define i32 @test29(i32 %c1, i32 %c2) {
%tmp = or i8 %tmp4.mask, %tmp1 ; <i8> [#uses=1]
%tmp10 = zext i8 %tmp to i32 ; <i32> [#uses=1]
ret i32 %tmp10
+; CHECK: %tmp2 = or i32 %c2, %c1
+; CHECK: %tmp10 = and i32 %tmp2, 255
+; CHECK: ret i32 %tmp10
}
define i32 @test30(i32 %c1) {
@@ -200,6 +254,9 @@ define i32 @test30(i32 %c1) {
%c3 = xor i8 %c2, 1 ; <i8> [#uses=1]
%c4 = zext i8 %c3 to i32 ; <i32> [#uses=1]
ret i32 %c4
+; CHECK: %c3 = and i32 %c1, 255
+; CHECK: %c4 = xor i32 %c3, 1
+; CHECK: ret i32 %c4
}
define i1 @test31(i64 %A) {
@@ -207,6 +264,9 @@ define i1 @test31(i64 %A) {
%C = and i32 %B, 42 ; <i32> [#uses=1]
%D = icmp eq i32 %C, 10 ; <i1> [#uses=1]
ret i1 %D
+; CHECK: %C1 = and i64 %A, 42
+; CHECK: %D = icmp eq i64 %C1, 10
+; CHECK: ret i1 %D
}
define void @test32(double** %tmp) {
@@ -214,12 +274,17 @@ define void @test32(double** %tmp) {
%tmp8.upgrd.1 = bitcast [16 x i8]* %tmp8 to double* ; <double*> [#uses=1]
store double* %tmp8.upgrd.1, double** %tmp
ret void
+; CHECK: %tmp81 = malloc [2 x double]
+; CHECK: %tmp81.sub = getelementptr inbounds [2 x double]* %tmp81, i64 0, i64 0
+; CHECK: store double* %tmp81.sub, double** %tmp
+; CHECK: ret void
}
define i32 @test33(i32 %c1) {
%x = bitcast i32 %c1 to float ; <float> [#uses=1]
%y = bitcast float %x to i32 ; <i32> [#uses=1]
ret i32 %y
+; CHECK: ret i32 %c1
}
define i16 @test34(i16 %a) {
@@ -227,6 +292,8 @@ define i16 @test34(i16 %a) {
%tmp21 = lshr i32 %c1, 8 ; <i32> [#uses=1]
%c2 = trunc i32 %tmp21 to i16 ; <i16> [#uses=1]
ret i16 %c2
+; CHECK: %tmp21 = lshr i16 %a, 8
+; CHECK: ret i16 %tmp21
}
define i16 @test35(i16 %a) {
@@ -234,6 +301,8 @@ define i16 @test35(i16 %a) {
%tmp2 = lshr i16 %c1, 8 ; <i16> [#uses=1]
%c2 = bitcast i16 %tmp2 to i16 ; <i16> [#uses=1]
ret i16 %c2
+; CHECK: %tmp2 = lshr i16 %a, 8
+; CHECK: ret i16 %tmp2
}
; icmp sgt i32 %a, -1
@@ -243,6 +312,8 @@ define i1 @test36(i32 %a) {
%c = trunc i32 %b to i8
%d = icmp eq i8 %c, 0
ret i1 %d
+; CHECK: %d = icmp sgt i32 %a, -1
+; CHECK: ret i1 %d
}
; ret i1 false
@@ -252,6 +323,7 @@ define i1 @test37(i32 %a) {
%d = trunc i32 %c to i8
%e = icmp eq i8 %d, 11
ret i1 %e
+; CHECK: ret i1 false
}
define i64 @test38(i32 %a) {
@@ -260,4 +332,7 @@ define i64 @test38(i32 %a) {
%3 = xor i8 %2, 1
%4 = zext i8 %3 to i64
ret i64 %4
+; CHECK: %1 = icmp ne i32 %a, -2
+; CHECK: %2 = zext i1 %1 to i64
+; CHECK: ret i64 %2
}