58 lines
1.6 KiB
LLVM
58 lines
1.6 KiB
LLVM
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; RUN: llc < %s -march=nvptx -mcpu=sm_35 | FileCheck %s
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; Verify that we correctly emit code for i8 ldg/ldu. We do not expose 8-bit
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; registers in the backend, so these loads need special handling.
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target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
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target triple = "nvptx64-unknown-unknown"
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; CHECK-LABEL: ex_zext
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define void @ex_zext(i8* noalias readonly %data, i32* %res) {
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entry:
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; CHECK: ld.global.nc.u8
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%val = load i8, i8* %data
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; CHECK: cvt.u32.u8
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%valext = zext i8 %val to i32
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store i32 %valext, i32* %res
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ret void
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}
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; CHECK-LABEL: ex_sext
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define void @ex_sext(i8* noalias readonly %data, i32* %res) {
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entry:
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; CHECK: ld.global.nc.u8
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%val = load i8, i8* %data
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; CHECK: cvt.s32.s8
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%valext = sext i8 %val to i32
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store i32 %valext, i32* %res
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ret void
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}
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; CHECK-LABEL: ex_zext_v2
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define void @ex_zext_v2(<2 x i8>* noalias readonly %data, <2 x i32>* %res) {
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entry:
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; CHECK: ld.global.nc.v2.u8
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%val = load <2 x i8>, <2 x i8>* %data
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; CHECK: cvt.u32.u16
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%valext = zext <2 x i8> %val to <2 x i32>
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store <2 x i32> %valext, <2 x i32>* %res
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ret void
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}
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; CHECK-LABEL: ex_sext_v2
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define void @ex_sext_v2(<2 x i8>* noalias readonly %data, <2 x i32>* %res) {
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entry:
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; CHECK: ld.global.nc.v2.u8
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%val = load <2 x i8>, <2 x i8>* %data
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; CHECK: cvt.s32.s8
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%valext = sext <2 x i8> %val to <2 x i32>
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store <2 x i32> %valext, <2 x i32>* %res
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ret void
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}
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!nvvm.annotations = !{!0,!1,!2,!3}
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!0 = !{void (i8*, i32*)* @ex_zext, !"kernel", i32 1}
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!1 = !{void (i8*, i32*)* @ex_sext, !"kernel", i32 1}
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!2 = !{void (<2 x i8>*, <2 x i32>*)* @ex_zext_v2, !"kernel", i32 1}
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!3 = !{void (<2 x i8>*, <2 x i32>*)* @ex_sext_v2, !"kernel", i32 1}
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