diff options
Diffstat (limited to 'test/Transforms/InstCombine/cast.ll')
-rw-r--r-- | test/Transforms/InstCombine/cast.ll | 77 |
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 } |