48 lines
1.2 KiB
LLVM
48 lines
1.2 KiB
LLVM
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; Test that we take advantage of signext and zeroext annotations.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Zero extension of something that is already zero-extended.
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define void @f1(i32 zeroext %r2, i64 *%r3) {
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; CHECK-LABEL: f1:
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; CHECK-NOT: %r2
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; CHECK: stg %r2, 0(%r3)
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; CHECK: br %r14
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%conv = zext i32 %r2 to i64
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store i64 %conv, i64* %r3
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ret void
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}
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; Sign extension of something that is already sign-extended.
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define void @f2(i32 signext %r2, i64 *%r3) {
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; CHECK-LABEL: f2:
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; CHECK-NOT: %r2
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; CHECK: stg %r2, 0(%r3)
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; CHECK: br %r14
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%conv = sext i32 %r2 to i64
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store i64 %conv, i64* %r3
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ret void
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}
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; Sign extension of something that is already zero-extended.
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define void @f3(i32 zeroext %r2, i64 *%r3) {
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; CHECK-LABEL: f3:
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; CHECK: lgfr [[REGISTER:%r[0-5]+]], %r2
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; CHECK: stg [[REGISTER]], 0(%r3)
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; CHECK: br %r14
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%conv = sext i32 %r2 to i64
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store i64 %conv, i64* %r3
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ret void
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}
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; Zero extension of something that is already sign-extended.
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define void @f4(i32 signext %r2, i64 *%r3) {
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; CHECK-LABEL: f4:
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; CHECK: llgfr [[REGISTER:%r[0-5]+]], %r2
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; CHECK: stg [[REGISTER]], 0(%r3)
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; CHECK: br %r14
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%conv = zext i32 %r2 to i64
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store i64 %conv, i64* %r3
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ret void
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}
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