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| author | Dan Gohman <gohman@apple.com> | 2009-03-05 19:32:48 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-03-05 19:32:48 +0000 |
| commit | 4bfcf2a2a64785f3f0f0dd8fa6f4052d6cd7c08c (patch) | |
| tree | e6efb093f9ff49415dc3f25dde1d398dd6a44fb4 /test/CodeGen | |
| parent | 8733db351a115a6f269e8814df2804f1b2172362 (diff) | |
| download | external_llvm-4bfcf2a2a64785f3f0f0dd8fa6f4052d6cd7c08c.zip external_llvm-4bfcf2a2a64785f3f0f0dd8fa6f4052d6cd7c08c.tar.gz external_llvm-4bfcf2a2a64785f3f0f0dd8fa6f4052d6cd7c08c.tar.bz2 | |
Fix the "test" optimization to recognize "dec" as an add of
negative one, as subtracts of immediates are canonicalized
to adds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66180 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
| -rw-r--r-- | test/CodeGen/X86/peep-test-0.ll (renamed from test/CodeGen/X86/peep-test.ll) | 0 | ||||
| -rw-r--r-- | test/CodeGen/X86/peep-test-1.ll | 23 |
2 files changed, 23 insertions, 0 deletions
diff --git a/test/CodeGen/X86/peep-test.ll b/test/CodeGen/X86/peep-test-0.ll index a95b564..a95b564 100644 --- a/test/CodeGen/X86/peep-test.ll +++ b/test/CodeGen/X86/peep-test-0.ll diff --git a/test/CodeGen/X86/peep-test-1.ll b/test/CodeGen/X86/peep-test-1.ll new file mode 100644 index 0000000..b4698e3 --- /dev/null +++ b/test/CodeGen/X86/peep-test-1.ll @@ -0,0 +1,23 @@ +; RUN: llvm-as < %s | llc -march=x86 > %t +; RUN: grep dec %t | count 1 +; RUN: not grep test %t +; RUN: not grep cmp %t + +define void @foo(i32 %n, double* nocapture %p) nounwind { + br label %bb + +bb: + %indvar = phi i32 [ 0, %0 ], [ %indvar.next, %bb ] + %i.03 = sub i32 %n, %indvar + %1 = getelementptr double* %p, i32 %i.03 + %2 = load double* %1, align 4 + %3 = mul double %2, 2.930000e+00 + store double %3, double* %1, align 4 + %4 = add i32 %i.03, -1 + %phitmp = icmp slt i32 %4, 0 + %indvar.next = add i32 %indvar, 1 + br i1 %phitmp, label %bb, label %return + +return: + ret void +} |