0f1b5f115a
ptxas is a proprietary compiler from Nvidia that can compile PTX to machine code (SASS). It has a lot of diagnostics to catch errors in PTX, which can be used to verify PTX output from llc. Set -DPXTAS_EXECUTABLE=/path/to/ptxas CMake option to enable it. If this option is not set, then ptxas is substituted to true which effectively disables all ptxas RUN lines. LLVM_PTXAS_EXECUTABLE environment variable takes precedence over the CMake option, and allows to override ptxas executable that is used for LIT without complete re-configuration. Differential Revision: https://reviews.llvm.org/D121727
34 lines
957 B
LLVM
34 lines
957 B
LLVM
; RUN: llc < %s -march=nvptx -mcpu=sm_20 | FileCheck %s
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; RUN: %if ptxas %{ llc < %s -march=nvptx -mcpu=sm_20 | %ptxas-verify %}
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define void @foo(<2 x i32>* %a) {
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; CHECK: .func foo
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; CHECK: ld.v2.u32
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; CHECK-NEXT: ld.v2.u32
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; CHECK-NEXT: ld.v2.u32
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; CHECK-NEXT: ld.v2.u32
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; CHECK-NEXT: add.s32
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; CHECK-NEXT: add.s32
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; CHECK-NEXT: add.s32
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; CHECK-NEXT: add.s32
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; CHECK-NEXT: add.s32
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; CHECK-NEXT: add.s32
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%ptr0 = getelementptr <2 x i32>, <2 x i32>* %a, i32 0
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%val0 = load <2 x i32>, <2 x i32>* %ptr0
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%ptr1 = getelementptr <2 x i32>, <2 x i32>* %a, i32 1
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%val1 = load <2 x i32>, <2 x i32>* %ptr1
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%ptr2 = getelementptr <2 x i32>, <2 x i32>* %a, i32 2
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%val2 = load <2 x i32>, <2 x i32>* %ptr2
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%ptr3 = getelementptr <2 x i32>, <2 x i32>* %a, i32 3
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%val3 = load <2 x i32>, <2 x i32>* %ptr3
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%t0 = add <2 x i32> %val0, %val1
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%t1 = add <2 x i32> %t0, %val2
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%t2 = add <2 x i32> %t1, %val3
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store <2 x i32> %t2, <2 x i32>* %a
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ret void
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}
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