From 2044bccd1a4f0ade46554c3567092b7e928d5d27 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Wed, 12 Dec 2007 07:54:08 +0000 Subject: Add a test case for -optimize-ext-uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44928 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/CodeGen/X86/opt-ext-uses.ll | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 test/CodeGen/X86/opt-ext-uses.ll (limited to 'test/CodeGen/X86/opt-ext-uses.ll') diff --git a/test/CodeGen/X86/opt-ext-uses.ll b/test/CodeGen/X86/opt-ext-uses.ll new file mode 100644 index 0000000000..faa9be7550 --- /dev/null +++ b/test/CodeGen/X86/opt-ext-uses.ll @@ -0,0 +1,19 @@ +; RUN: llvm-as < %s | llc -march=x86 -optimize-ext-uses=true | grep movw | count 1 + +define i16 @t() signext { +entry: + %tmp180 = load i16* null, align 2 ; [#uses=3] + %tmp180181 = sext i16 %tmp180 to i32 ; [#uses=1] + %tmp182 = add i16 %tmp180, 10 + %tmp185 = icmp slt i16 %tmp182, 0 ; [#uses=1] + br i1 %tmp185, label %cond_true188, label %cond_next245 + +cond_true188: ; preds = %entry + %tmp195196 = trunc i16 %tmp180 to i8 ; [#uses=0] + ret i16 %tmp180 + +cond_next245: ; preds = %entry + %tmp256 = and i32 %tmp180181, 15 ; [#uses=0] + %tmp3 = trunc i32 %tmp256 to i16 + ret i16 %tmp3 +} -- cgit v1.2.3