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
48 lines
1.2 KiB
LLVM
48 lines
1.2 KiB
LLVM
; RUN: llc < %s -march=nvptx 2>&1 | FileCheck %s
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; RUN: %if ptxas %{ llc < %s -march=nvptx | %ptxas-verify %}
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; Allow to make libcalls that are defined in the current module
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declare i8* @malloc(i64)
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declare void @free(i8*)
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; Underlying libcall declaration
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; CHECK: .visible .func (.param .align 16 .b8 func_retval0[16]) __umodti3
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define i128 @remainder(i128, i128) {
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bb0:
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; CHECK: { // callseq 0, 0
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; CHECK: call.uni (retval0),
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; CHECK-NEXT: __umodti3,
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; CHECK-NEXT: (
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; CHECK-NEXT: param0,
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; CHECK-NEXT: param1
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; CHECK-NEXT: );
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; CHECK-NEXT: ld.param.v2.b64 {%[[REG0:rd[0-9]+]], %[[REG1:rd[0-9]+]]}, [retval0+0];
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; CHECK-NEXT: } // callseq 0
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%a = urem i128 %0, %1
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br label %bb1
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bb1:
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; CHECK-NEXT: st.param.v2.b64 [func_retval0+0], {%[[REG0]], %[[REG1]]};
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; CHECK-NEXT: ret;
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ret i128 %a
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}
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; Underlying libcall definition
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; CHECK: .visible .func (.param .align 16 .b8 func_retval0[16]) __umodti3(
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define i128 @__umodti3(i128, i128) {
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ret i128 0
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}
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define void @malloc_then_free() {
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; CHECK: call.uni (retval0),
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; CHECK: malloc,
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; CHECK: call.uni
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; CHECK: free,
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%a = call i8* @malloc(i64 4)
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store i8 0, i8* %a
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call void @free(i8* %a)
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ret void
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}
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