Mercurial > hg > CbC > CbC_llvm
diff test/CodeGen/AArch64/setcc-takes-i32.ll @ 0:95c75e76d11b LLVM3.4
LLVM 3.4
author | Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> |
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date | Thu, 12 Dec 2013 13:56:28 +0900 |
parents | |
children | 54457678186b |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/CodeGen/AArch64/setcc-takes-i32.ll Thu Dec 12 13:56:28 2013 +0900 @@ -0,0 +1,22 @@ +; RUN: llc -verify-machineinstrs -mtriple=aarch64-none-linux-gnu < %s | FileCheck %s + +; Most important point here is that the promotion of the i1 works +; correctly. Previously LLVM thought that i64 was the appropriate SetCC output, +; which meant it proceded in two steps and produced an i64 -> i64 any_ext which +; couldn't be selected and faulted. + +; It was expecting the smallest legal promotion of i1 to be the preferred SetCC +; type, so we'll satisfy it (this actually arguably gives better code anyway, +; with flag-manipulation operations allowed to use W-registers). + +declare {i64, i1} @llvm.umul.with.overflow.i64(i64, i64) + +define i64 @test_select(i64 %lhs, i64 %rhs) { +; CHECK-LABEL: test_select: + + %res = call {i64, i1} @llvm.umul.with.overflow.i64(i64 %lhs, i64 %rhs) + %flag = extractvalue {i64, i1} %res, 1 + %retval = select i1 %flag, i64 %lhs, i64 %rhs + ret i64 %retval +; CHECK: ret +}