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TheRock/compiler/amd-llvm/llvm/test/CodeGen/NVPTX/machine-cse-predicate-inversion-multiple-users.ll
derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

54 lines
1.7 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
; RUN: llc -mcpu=sm_100 < %s | FileCheck %s
; RUN: %if ptxas-sm_100 %{ llc < %s -mcpu=sm_100 | %ptxas-verify -arch=sm_100 %}
; NOTE: Currently SETP inversions require all users to be CBranch. However other users like selects
; can also be processed.
target triple = "nvptx64-nvidia-cuda"
define i32 @test_multiple_users(i32 %a, i32 %b) {
; CHECK-LABEL: test_multiple_users(
; CHECK: {
; CHECK-NEXT: .reg .pred %p<3>;
; CHECK-NEXT: .reg .b32 %r<6>;
; CHECK-EMPTY:
; CHECK-NEXT: // %bb.0: // %entry
; CHECK-NEXT: ld.param.b32 %r3, [test_multiple_users_param_1];
; CHECK-NEXT: ld.param.b32 %r2, [test_multiple_users_param_0];
; CHECK-NEXT: setp.eq.b32 %p1, %r2, %r3;
; CHECK-NEXT: mov.b32 %r5, 0;
; CHECK-NEXT: @%p1 bra $L__BB0_2;
; CHECK-NEXT: // %bb.1: // %then
; CHECK-NEXT: mov.b32 %r5, 1;
; CHECK-NEXT: $L__BB0_2: // %merge1
; CHECK-NEXT: setp.ne.b32 %p2, %r2, %r3;
; CHECK-NEXT: selp.b32 %r1, 1, 0, %p2;
; CHECK-NEXT: @%p2 bra $L__BB0_4;
; CHECK-NEXT: // %bb.3: // %else
; CHECK-NEXT: mov.b32 %r5, 0;
; CHECK-NEXT: $L__BB0_4: // %merge2
; CHECK-NEXT: add.s32 %r4, %r5, %r1;
; CHECK-NEXT: st.param.b32 [func_retval0], %r4;
; CHECK-NEXT: ret;
entry:
%cmp1 = icmp eq i32 %a, %b
br i1 %cmp1, label %merge1, label %then
then:
br label %merge1
merge1:
%phi1 = phi i32 [ 1, %then ], [ 0, %entry ]
%cmp2 = icmp ne i32 %a, %b
%val = select i1 %cmp2, i32 1, i32 0
br i1 %cmp2, label %merge2, label %else
else:
br label %merge2
merge2:
%phi2 = phi i32 [ %phi1, %merge1 ], [ 0, %else ]
%ret = add i32 %phi2, %val
ret i32 %ret
}