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43 lines
844 B
43 lines
844 B
4 months ago
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; Test integer negation.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Test i32->i32 negation.
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define i32 @f1(i32 %val) {
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; CHECK-LABEL: f1:
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; CHECK: lcr %r2, %r2
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; CHECK: br %r14
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%neg = sub i32 0, %val
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ret i32 %neg
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}
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; Test i32->i64 negation.
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define i64 @f2(i32 %val) {
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; CHECK-LABEL: f2:
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; CHECK: lcgfr %r2, %r2
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; CHECK: br %r14
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%ext = sext i32 %val to i64
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%neg = sub i64 0, %ext
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ret i64 %neg
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}
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; Test i32->i64 negation that uses an "in-register" form of sign extension.
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define i64 @f3(i64 %val) {
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; CHECK-LABEL: f3:
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; CHECK: lcgfr %r2, %r2
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; CHECK: br %r14
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%trunc = trunc i64 %val to i32
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%ext = sext i32 %trunc to i64
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%neg = sub i64 0, %ext
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ret i64 %neg
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}
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; Test i64 negation.
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define i64 @f4(i64 %val) {
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; CHECK-LABEL: f4:
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; CHECK: lcgr %r2, %r2
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; CHECK: br %r14
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%neg = sub i64 0, %val
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ret i64 %neg
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}
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