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TheRock/compiler/amd-llvm/llvm/test/Transforms/StraightLineStrengthReduce/NVPTX/speculative-slsr.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

68 lines
2.1 KiB
LLVM

; RUN: llc < %s -mcpu=sm_35 | FileCheck %s
target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
target triple = "nvptx64-nvidia-cuda"
; CUDA code
; __global__ void foo(int b, int s) {
; #pragma unroll
; for (int i = 0; i < 4; ++i) {
; if (cond(i))
; use((b + i) * s);
; }
; }
define ptx_kernel void @foo(i32 %b, i32 %s) {
; CHECK-LABEL: .visible .entry foo(
entry:
; CHECK: ld.param.b32 [[s:%r[0-9]+]], [foo_param_1];
; CHECK: ld.param.b32 [[b:%r[0-9]+]], [foo_param_0];
%call = tail call zeroext i1 @cond(i32 0)
br i1 %call, label %if.then, label %for.inc
if.then: ; preds = %entry
%mul = mul nsw i32 %b, %s
; CHECK: mul.lo.s32 [[a0:%r[0-9]+]], [[b]], [[s]]
tail call void @use(i32 %mul)
br label %for.inc
for.inc: ; preds = %entry, %if.then
%call.1 = tail call zeroext i1 @cond(i32 1)
br i1 %call.1, label %if.then.1, label %for.inc.1
if.then.1: ; preds = %for.inc
%add.1 = add nsw i32 %b, 1
%mul.1 = mul nsw i32 %add.1, %s
; CHECK: add.s32 [[a1:%r[0-9]+]], [[a0]], [[s]]
tail call void @use(i32 %mul.1)
br label %for.inc.1
for.inc.1: ; preds = %if.then.1, %for.inc
%call.2 = tail call zeroext i1 @cond(i32 2)
br i1 %call.2, label %if.then.2, label %for.inc.2
if.then.2: ; preds = %for.inc.1
%add.2 = add nsw i32 %b, 2
%mul.2 = mul nsw i32 %add.2, %s
; CHECK: add.s32 [[a2:%r[0-9]+]], [[a1]], [[s]]
tail call void @use(i32 %mul.2)
br label %for.inc.2
for.inc.2: ; preds = %if.then.2, %for.inc.1
%call.3 = tail call zeroext i1 @cond(i32 3)
br i1 %call.3, label %if.then.3, label %for.inc.3
if.then.3: ; preds = %for.inc.2
%add.3 = add nsw i32 %b, 3
%mul.3 = mul nsw i32 %add.3, %s
; CHECK: add.s32 [[a3:%r[0-9]+]], [[a2]], [[s]]
tail call void @use(i32 %mul.3)
br label %for.inc.3
for.inc.3: ; preds = %if.then.3, %for.inc.2
ret void
}
declare zeroext i1 @cond(i32)
declare void @use(i32)