derek.holloway
7502bf64a4
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109 lines
2.4 KiB
LLVM
109 lines
2.4 KiB
LLVM
; Test that we can use NI for byte operations that are expressed as i32
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; or i64 operations.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Zero extension to 32 bits, negative constant.
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define void @f1(ptr %ptr) {
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; CHECK-LABEL: f1:
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; CHECK: ni 0(%r2), 254
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = zext i8 %val to i32
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%and = and i32 %ext, -2
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%trunc = trunc i32 %and to i8
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store i8 %trunc, ptr %ptr
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ret void
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}
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; Zero extension to 64 bits, negative constant.
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define void @f2(ptr %ptr) {
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; CHECK-LABEL: f2:
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; CHECK: ni 0(%r2), 254
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = zext i8 %val to i64
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%and = and i64 %ext, -2
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%trunc = trunc i64 %and to i8
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store i8 %trunc, ptr %ptr
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ret void
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}
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; Zero extension to 32 bits, positive constant.
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define void @f3(ptr %ptr) {
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; CHECK-LABEL: f3:
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; CHECK: ni 0(%r2), 254
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = zext i8 %val to i32
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%and = and i32 %ext, 254
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%trunc = trunc i32 %and to i8
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store i8 %trunc, ptr %ptr
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ret void
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}
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; Zero extension to 64 bits, positive constant.
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define void @f4(ptr %ptr) {
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; CHECK-LABEL: f4:
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; CHECK: ni 0(%r2), 254
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = zext i8 %val to i64
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%and = and i64 %ext, 254
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%trunc = trunc i64 %and to i8
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store i8 %trunc, ptr %ptr
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ret void
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}
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; Sign extension to 32 bits, negative constant.
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define void @f5(ptr %ptr) {
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; CHECK-LABEL: f5:
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; CHECK: ni 0(%r2), 254
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = sext i8 %val to i32
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%and = and i32 %ext, -2
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%trunc = trunc i32 %and to i8
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store i8 %trunc, ptr %ptr
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ret void
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}
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; Sign extension to 64 bits, negative constant.
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define void @f6(ptr %ptr) {
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; CHECK-LABEL: f6:
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; CHECK: ni 0(%r2), 254
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = sext i8 %val to i64
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%and = and i64 %ext, -2
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%trunc = trunc i64 %and to i8
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store i8 %trunc, ptr %ptr
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ret void
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}
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; Sign extension to 32 bits, positive constant.
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define void @f7(ptr %ptr) {
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; CHECK-LABEL: f7:
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; CHECK: ni 0(%r2), 254
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = sext i8 %val to i32
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%and = and i32 %ext, 254
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%trunc = trunc i32 %and to i8
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store i8 %trunc, ptr %ptr
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ret void
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}
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; Sign extension to 64 bits, positive constant.
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define void @f8(ptr %ptr) {
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; CHECK-LABEL: f8:
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; CHECK: ni 0(%r2), 254
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = sext i8 %val to i64
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%and = and i64 %ext, 254
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%trunc = trunc i64 %and to i8
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store i8 %trunc, ptr %ptr
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ret void
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}
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