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llvm-mirror/test/CodeGen/ARM/ifcvt-callback.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

30 lines
814 B
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=thumb-- %s -o - | FileCheck %s
; This test checks that if-conversion pass is unconditionally added to the pass
; pipeline and is conditionally executed based on the per-function targert-cpu
; attribute.
define i32 @test_ifcvt(i32 %a, i32 %b) #0 {
; CHECK-LABEL: test_ifcvt:
; CHECK: @ %bb.0: @ %common.ret
; CHECK-NEXT: movs r2, #1
; CHECK-NEXT: cmp r0, #0
; CHECK-NEXT: it eq
; CHECK-NEXT: moveq.w r2, #-1
; CHECK-NEXT: adds r0, r1, r2
; CHECK-NEXT: bx lr
%tmp2 = icmp eq i32 %a, 0
br i1 %tmp2, label %cond_false, label %cond_true
cond_true:
%tmp5 = add i32 %b, 1
ret i32 %tmp5
cond_false:
%tmp7 = add i32 %b, -1
ret i32 %tmp7
}
attributes #0 = { "target-cpu"="cortex-a8" }