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6c65d3a736
There are certain PPC instructions into which we can fold a zero immediate operand. We can detect such cases by looking at the register class required by the using operand (so long as it is not otherwise constrained). llvm-svn: 178961
15 lines
434 B
LLVM
15 lines
434 B
LLVM
; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 | FileCheck %s
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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-f128:128:128-v128:128:128-n32:64"
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target triple = "powerpc64-unknown-linux-gnu"
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define i32 @test1(i1 %a, i32 %c) nounwind {
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%x = select i1 %a, i32 %c, i32 0
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ret i32 %x
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; CHECK: @test1
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; CHECK-NOT: li {{[0-9]+}}, 0
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; CHECK: isel 3, 0,
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; CHECK: blr
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}
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