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| author | Evan Cheng <evan.cheng@apple.com> | 2008-05-07 00:49:28 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-05-07 00:49:28 +0000 |
| commit | 7ebc06bfd8df4cd7c477af1e5fec196c32efcfea (patch) | |
| tree | 538a98ba638ffa877ec3c9c9e134295b5907e85e /test | |
| parent | 42ac929ed968939d22a715769e583aeed8f6c823 (diff) | |
| download | llvm-7ebc06bfd8df4cd7c477af1e5fec196c32efcfea.tar.gz llvm-7ebc06bfd8df4cd7c477af1e5fec196c32efcfea.tar.bz2 llvm-7ebc06bfd8df4cd7c477af1e5fec196c32efcfea.tar.xz | |
Yet another nasty spiller bug.
%ecx = op
store %cl<kill>, (addr)
(addr) = op %al
It's not safe to unfold the last operand and eliminate store even though %cl is marked kill. It's a sub-register use which means one of its super-register(s) may be used below.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50794 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/2008-05-06-SpillerBug.ll | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2008-05-06-SpillerBug.ll b/test/CodeGen/X86/2008-05-06-SpillerBug.ll new file mode 100644 index 0000000000..19231e9de8 --- /dev/null +++ b/test/CodeGen/X86/2008-05-06-SpillerBug.ll @@ -0,0 +1,37 @@ +; RUN: llvm-as < %s | llc -mtriple=i386-apple-darwin -relocation-model=pic -disable-fp-elim | grep addb | grep ebp + + %struct.rc4_state = type { i32, i32, [256 x i32] } +@.str1 = internal constant [65 x i8] c"m[%d] = 0x%02x, m[%d] = 0x%02x, 0x%02x, k = %d, key[k] = 0x%02x\0A\00" ; <[65 x i8]*> [#uses=1] +@keys = internal constant [7 x [30 x i8]] [ [30 x i8] c"\08\01#Eg\89\AB\CD\EF\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00", [30 x i8] c"\08\01#Eg\89\AB\CD\EF\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00", [30 x i8] c"\08\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00", [30 x i8] c"\04\EF\01#E\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00", [30 x i8] c"\08\01#Eg\89\AB\CD\EF\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00", [30 x i8] c"\04\EF\01#E\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00", [30 x i8] zeroinitializer ] ; <[7 x [30 x i8]]*> [#uses=1] + +declare i32 @printf(i8*, ...) nounwind + +define i32 @main(i32 %argc, i8** %argv) nounwind { +entry: + br label %bb25 + +bb25: ; preds = %bb25, %entry + br i1 false, label %bb.i, label %bb25 + +bb.i: ; preds = %bb.i, %bb25 + br i1 false, label %bb21.i, label %bb.i + +bb21.i: ; preds = %bb21.i, %bb.i + %k.0.reg2mem.0.i = phi i32 [ %k.1.i, %bb21.i ], [ 0, %bb.i ] ; <i32> [#uses=2] + %j.0.reg2mem.0.i = phi i8 [ %tmp35.i, %bb21.i ], [ 0, %bb.i ] ; <i8> [#uses=1] + %tmp25.i = load i32* null, align 4 ; <i32> [#uses=4] + %tmp2829.i = trunc i32 %tmp25.i to i8 ; <i8> [#uses=1] + %.sum = add i32 %k.0.reg2mem.0.i, 1 ; <i32> [#uses=3] + %tmp33.i = getelementptr [7 x [30 x i8]]* @keys, i32 0, i32 0, i32 %.sum ; <i8*> [#uses=1] + %tmp34.i = load i8* %tmp33.i, align 1 ; <i8> [#uses=1] + %tmp30.i = add i8 %tmp2829.i, %j.0.reg2mem.0.i ; <i8> [#uses=1] + %tmp35.i = add i8 %tmp30.i, %tmp34.i ; <i8> [#uses=2] + %tmp3536.i = zext i8 %tmp35.i to i32 ; <i32> [#uses=2] + %tmp39.i = getelementptr %struct.rc4_state* null, i32 0, i32 2, i32 %tmp3536.i ; <i32*> [#uses=1] + store i32 %tmp25.i, i32* %tmp39.i, align 4 + %tmp60.i = load i32* null, align 4 ; <i32> [#uses=1] + %tmp65.i = call i32 (i8*, ...)* @printf( i8* getelementptr ([65 x i8]* @.str1, i32 0, i32 0), i32 0, i32 %tmp60.i, i32 %tmp3536.i, i32 %tmp25.i, i32 %tmp25.i, i32 %k.0.reg2mem.0.i, i32 0 ) nounwind ; <i32> [#uses=0] + %tmp70.i = icmp slt i32 %.sum, 8 ; <i1> [#uses=1] + %k.1.i = select i1 %tmp70.i, i32 %.sum, i32 0 ; <i32> [#uses=1] + br label %bb21.i +} |