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TheRock/compiler/amd-llvm/llvm/test/CodeGen/Thumb2/LowOverheadLoops/pr168209.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

46 lines
1.5 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
; RUN: llc -mtriple=thumbv8.1m.main %s -o - | FileCheck %s
; Checks that t2WhileLoopSetup is not CSEd.
define i32 @test(i16 %arg) {
; CHECK-LABEL: test:
; CHECK: @ %bb.0: @ %bb
; CHECK-NEXT: push {r7, lr}
; CHECK-NEXT: uxth r0, r0
; CHECK-NEXT: wls lr, r0, .LBB0_4
; CHECK-NEXT: .LBB0_1: @ %bb3
; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1
; CHECK-NEXT: le lr, .LBB0_1
; CHECK-NEXT: @ %bb.2: @ %bb2
; CHECK-NEXT: wls lr, r0, .LBB0_4
; CHECK-NEXT: .LBB0_3: @ %bb7
; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1
; CHECK-NEXT: le lr, .LBB0_3
; CHECK-NEXT: .LBB0_4: @ %.critedge
; CHECK-NEXT: movs r0, #0
; CHECK-NEXT: pop {r7, pc}
bb:
%i = zext i16 %arg to i32
%i1 = icmp eq i16 %arg, 0
br i1 %i1, label %.critedge, label %bb3
bb2: ; preds = %bb3
br i1 %i1, label %.critedge, label %bb7
bb3: ; preds = %bb3, %bb
%i4 = phi i32 [ %i5, %bb3 ], [ 0, %bb ]
%i5 = add i32 %i4, 1
%i6 = icmp eq i32 %i5, %i
br i1 %i6, label %bb2, label %bb3
bb7: ; preds = %bb7, %bb2
%i8 = phi i32 [ %i9, %bb7 ], [ 0, %bb2 ]
%i9 = add i32 %i8, 1
%i10 = icmp eq i32 %i9, %i
br i1 %i10, label %.critedge, label %bb7
.critedge: ; preds = %bb7, %bb2, %bb
ret i32 0
}