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TheRock/compiler/amd-llvm/llvm/test/Analysis/ScalarEvolution/expander-replace-congruent-ivs.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

112 lines
2.3 KiB
LLVM

; RUN: opt -S -passes=indvars < %s | FileCheck %s
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.11.0"
; SCEVExpander would try to RAUW %val_2 with %c.lcssa, breaking "def
; dominates uses".
define void @pr27232(i32 %val, i1 %arg) {
; CHECK-LABEL: @pr27232(
entry:
br i1 %arg, label %loop_0.cond, label %for.body.us
for.body.us:
br label %loop_0.cond
loop_0.cond:
%val_2 = phi i32 [ %val, %for.body.us ], [ undef, %entry ]
br i1 true, label %loop_0.ph, label %loop_1.ph
loop_0.ph:
br label %loop_0
loop_1.exit:
br label %loop_1.ph
loop_1.ph:
%c.lcssa = phi i32 [ 0, %loop_0.cond ], [ %val_2, %loop_1.exit ]
br label %loop_1
loop_0:
br i1 %arg, label %loop_0, label %loop_1.exit
loop_1:
%d.1 = phi i32 [ %c.lcssa, %loop_1 ], [ %val_2, %loop_1.ph ]
%t.1 = phi i32 [ %val_2, %loop_1 ], [ %c.lcssa, %loop_1.ph ]
br i1 %arg, label %leave, label %loop_1
leave:
ret void
}
; @ReplaceArg_0 and @ReplaceArg_1 used to trigger a failed cast<>
; assertion in SCEVExpander.
define void @ReplaceArg_0(i32 %val, i1 %arg) {
; CHECK-LABEL: @ReplaceArg_0(
entry:
br i1 %arg, label %loop_0.cond, label %for.body.us
for.body.us:
br label %loop_0.cond
loop_0.cond:
br i1 true, label %loop_0.ph, label %loop_1.ph
loop_0.ph:
br label %loop_0
loop_1.exit:
br label %loop_1.ph
loop_1.ph:
%c.lcssa = phi i32 [ 0, %loop_0.cond ], [ %val, %loop_1.exit ]
br label %loop_1
loop_0:
br i1 %arg, label %loop_0, label %loop_1.exit
loop_1:
%d.1 = phi i32 [ %c.lcssa, %loop_1 ], [ %val, %loop_1.ph ]
%t.1 = phi i32 [ %val, %loop_1 ], [ %c.lcssa, %loop_1.ph ]
br i1 %arg, label %leave, label %loop_1
leave:
ret void
}
define void @ReplaceArg_1(i32 %val, i1 %arg) {
; CHECK-LABEL: @ReplaceArg_1(
entry:
br i1 %arg, label %loop_0.cond, label %for.body.us
for.body.us:
br label %loop_0.cond
loop_0.cond:
br i1 true, label %loop_0.ph, label %loop_1.ph
loop_0.ph:
br label %loop_0
loop_1.exit:
br label %loop_1.ph
loop_1.ph:
%c.lcssa = phi i32 [ 0, %loop_0.cond ], [ %val, %loop_1.exit ]
br label %loop_1
loop_0:
br i1 %arg, label %loop_0, label %loop_1.exit
loop_1:
%t.1 = phi i32 [ %val, %loop_1 ], [ %c.lcssa, %loop_1.ph ]
%d.1 = phi i32 [ %c.lcssa, %loop_1 ], [ %val, %loop_1.ph ]
br i1 %arg, label %leave, label %loop_1
leave:
ret void
}