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author | Daniel Dunbar <daniel@zuster.org> | 2010-05-18 17:22:24 +0000 |
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committer | Daniel Dunbar <daniel@zuster.org> | 2010-05-18 17:22:24 +0000 |
commit | 3f40b31256b995e05edad1846e8d6c758df09ed8 (patch) | |
tree | 05fa969b635a0c01af67dbec001ecf9bb89e7855 /test/CodeGen/X86/mcinst-lowering.ll | |
parent | 3538c808f8fd1d4124f0cda4c962467ec8ae5b70 (diff) | |
download | llvm-3f40b31256b995e05edad1846e8d6c758df09ed8.tar.gz llvm-3f40b31256b995e05edad1846e8d6c758df09ed8.tar.bz2 llvm-3f40b31256b995e05edad1846e8d6c758df09ed8.tar.xz |
MC/X86: Implement custom lowering to make sure we match things like
X86::ADC32ri $0, %eax
to
X86::ADC32i32 $0
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104030 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/mcinst-lowering.ll')
-rw-r--r-- | test/CodeGen/X86/mcinst-lowering.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test/CodeGen/X86/mcinst-lowering.ll b/test/CodeGen/X86/mcinst-lowering.ll new file mode 100644 index 0000000000..1ef5a971ba --- /dev/null +++ b/test/CodeGen/X86/mcinst-lowering.ll @@ -0,0 +1,26 @@ +; RUN: llc --show-mc-encoding < %s | FileCheck %s + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" +target triple = "x86_64-apple-darwin10.0.0" + +define i32 @f0(i32* nocapture %x) nounwind readonly ssp { +entry: + %tmp1 = load i32* %x ; <i32> [#uses=2] + %tobool = icmp eq i32 %tmp1, 0 ; <i1> [#uses=1] + br i1 %tobool, label %if.end, label %return + +if.end: ; preds = %entry + +; Check that we lower to the short form of cmpl, which has a fixed %eax +; register. +; +; CHECK: cmpl $16777216, %eax +; CHECK: # encoding: [0x3d,0x00,0x00,0x00,0x01] + %cmp = icmp eq i32 %tmp1, 16777216 ; <i1> [#uses=1] + + %conv = zext i1 %cmp to i32 ; <i32> [#uses=1] + ret i32 %conv + +return: ; preds = %entry + ret i32 0 +} |