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Summary: Add support for the z13 instructions LOCHI and LOCGHI which conditionally load immediate values. Add target instruction info hooks so that if conversion will allow predication of LHI/LGHI. Author: RolandF Reviewers: uweigand Subscribers: zhanjunl Commiting on behalf of Roland. Differential Revision: http://reviews.llvm.org/D22117 llvm-svn: 275086
24 lines
541 B
LLVM
24 lines
541 B
LLVM
; Test LOCHI/LOCGHI
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
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; CHECK-LABEL: bar1:
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; CHECK: lhi [[REG:%r[0-5]]], 42
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; CHECK: chi %r2, 0
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; CHECK: lochie [[REG]], 0
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define signext i32 @bar1(i32 signext %x) {
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%cmp = icmp ne i32 %x, 0
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%.x = select i1 %cmp, i32 42, i32 0
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ret i32 %.x
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}
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; CHECK-LABEL: bar2:
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; CHECK: ltgr [[REG:%r[0-5]]], %r2
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; CHECK: lghi %r2, 42
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; CHECK: locghie %r2, 0
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define signext i64 @bar2(i64 signext %x) {
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%cmp = icmp ne i64 %x, 0
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%.x = select i1 %cmp, i64 42, i64 0
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ret i64 %.x
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}
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