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TheRock/compiler/amd-llvm/llvm/test/Transforms/InstCombine/fold-phi-arg-gep-to-phi-negative.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

40 lines
1.6 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
%foo = type { i16, i16, i16 }
define <16 x ptr> @test(i1 %tobool) {
; CHECK-LABEL: define <16 x ptr> @test(
; CHECK-SAME: i1 [[TOBOOL:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[LANE_0:%.*]] = alloca [[FOO:%.*]], align 16
; CHECK-NEXT: [[LANE_15:%.*]] = insertelement <16 x ptr> poison, ptr [[LANE_0]], i64 0
; CHECK-NEXT: br i1 [[TOBOOL]], label %[[F1:.*]], label %[[F0:.*]]
; CHECK: [[F0]]:
; CHECK-NEXT: [[MM_VECTORGEP1:%.*]] = getelementptr inbounds i8, <16 x ptr> [[LANE_15]], i64 2
; CHECK-NEXT: br label %[[MERGE:.*]]
; CHECK: [[F1]]:
; CHECK-NEXT: [[MM_VECTORGEP22:%.*]] = getelementptr inbounds i8, <16 x ptr> [[LANE_15]], i64 4
; CHECK-NEXT: br label %[[MERGE]]
; CHECK: [[MERGE]]:
; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <16 x ptr> [ [[MM_VECTORGEP1]], %[[F0]] ], [ [[MM_VECTORGEP22]], %[[F1]] ]
; CHECK-NEXT: ret <16 x ptr> [[VEC_PHI]]
;
entry:
%lane.0 = alloca %foo, align 16
%lane.15 = insertelement <16 x ptr> poison, ptr %lane.0, i64 0
%mm_vectorGEP = getelementptr inbounds %foo, <16 x ptr> %lane.15, <16 x i64> zeroinitializer, <16 x i32> splat (i32 1)
%mm_vectorGEP2 = getelementptr inbounds %foo, <16 x ptr> %lane.15, <16 x i64> zeroinitializer, <16 x i32> splat (i32 2)
br i1 %tobool, label %f1, label %f0
f0:
br label %merge
f1:
br label %merge
merge:
%vec.phi = phi <16 x ptr> [ %mm_vectorGEP, %f0], [ %mm_vectorGEP2, %f1 ]
ret <16 x ptr> %vec.phi
}