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llvm-mirror/test/CodeGen/ARM/ifcvt3.ll
Roman Lebedev 7dcf1654f8 [SimplifyCFG] Tail-merging all blocks with ret terminator
Based ontop of D104598, which is a NFCI-ish refactoring.
Here, a restriction, that only empty blocks can be merged, is lifted.

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D104597
2021-06-24 13:15:39 +03:00

47 lines
1.4 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=arm-eabi -mcpu=cortex-a8 %s -o - | FileCheck %s
; RUN: llc -mtriple=arm-eabi -mattr=+v4t %s -o - | FileCheck %s -check-prefix CHECK-V4-CMP
; RUN: llc -mtriple=arm-eabi -mattr=+v4t %s -o - | FileCheck %s -check-prefix CHECK-V4-BX
define i32 @t1(i32 %a, i32 %b, i32 %c, i32 %d) {
; CHECK-LABEL: t1:
; CHECK: @ %bb.0:
; CHECK-NEXT: cmp r2, #1
; CHECK-NEXT: cmpne r2, #7
; CHECK-NEXT: addne r0, r1, r0
; CHECK-NEXT: addeq r0, r0, r1
; CHECK-NEXT: addeq r0, r0, #1
; CHECK-NEXT: bx lr
;
; CHECK-V4-CMP-LABEL: t1:
; CHECK-V4-CMP: @ %bb.0:
; CHECK-V4-CMP-NEXT: cmp r2, #7
; CHECK-V4-CMP-NEXT: cmpne r2, #1
; CHECK-V4-CMP-NEXT: addne r0, r1, r0
; CHECK-V4-CMP-NEXT: addeq r0, r0, r1
; CHECK-V4-CMP-NEXT: addeq r0, r0, #1
; CHECK-V4-CMP-NEXT: bx lr
;
; CHECK-V4-BX-LABEL: t1:
; CHECK-V4-BX: @ %bb.0:
; CHECK-V4-BX-NEXT: cmp r2, #7
; CHECK-V4-BX-NEXT: cmpne r2, #1
; CHECK-V4-BX-NEXT: addne r0, r1, r0
; CHECK-V4-BX-NEXT: addeq r0, r0, r1
; CHECK-V4-BX-NEXT: addeq r0, r0, #1
; CHECK-V4-BX-NEXT: bx lr
switch i32 %c, label %cond_next [
i32 1, label %cond_true
i32 7, label %cond_true
]
cond_true:
%tmp12 = add i32 %a, 1
%tmp1518 = add i32 %tmp12, %b
ret i32 %tmp1518
cond_next:
%tmp15 = add i32 %b, %a
ret i32 %tmp15
}