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| # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -O0 -run-pass=aarch64-prelegalizer-combiner -global-isel -verify-machineinstrs %s -o - | FileCheck %s
--- |
target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
target triple = "arm64-apple-ios5.0.0"
define i32 @foo(i32 %a, i32 %b) {
entry:
%cmp = icmp sgt i32 %a, 0
br i1 %cmp, label %if.then, label %if.end
if.then:
%add = add nsw i32 %b, %a
%add1 = add nsw i32 %a, %b
br label %return
if.end:
%mul = mul nsw i32 %b, %b
%add2 = add nuw nsw i32 %mul, 2
br label %return
return:
%retval.0 = phi i32 [ %add1, %if.then ], [ %add2, %if.end ]
ret i32 %retval.0
}
...
---
name: foo
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: foo
; CHECK: bb.0.entry:
; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000)
; CHECK: liveins: $w0, $w1
; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY $w0
; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY $w1
; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 2
; CHECK: [[ICMP:%[0-9]+]]:_(s1) = G_ICMP intpred(sle), [[COPY]](s32), [[C]]
; CHECK: G_BRCOND [[ICMP]](s1), %bb.2
; CHECK: bb.1.if.then:
; CHECK: successors: %bb.3(0x80000000)
; CHECK: [[ADD:%[0-9]+]]:_(s32) = nsw G_ADD [[COPY1]], [[COPY]]
; CHECK: [[ADD1:%[0-9]+]]:_(s32) = nsw G_ADD [[ADD]], [[COPY1]]
; CHECK: G_BR %bb.3
; CHECK: bb.2.if.end:
; CHECK: successors: %bb.3(0x80000000)
; CHECK: [[MUL:%[0-9]+]]:_(s32) = nsw G_MUL [[COPY1]], [[COPY1]]
; CHECK: [[ADD2:%[0-9]+]]:_(s32) = nuw nsw G_ADD [[MUL]], [[C1]]
; CHECK: bb.3.return:
; CHECK: [[PHI:%[0-9]+]]:_(s32) = G_PHI [[ADD1]](s32), %bb.1, [[ADD2]](s32), %bb.2
; CHECK: $w0 = COPY [[PHI]](s32)
; CHECK: RET_ReallyLR implicit $w0
bb.1.entry:
liveins: $w0, $w1
%0:_(s32) = COPY $w0
%1:_(s32) = COPY $w1
%2:_(s32) = G_CONSTANT i32 0
%5:_(s32) = G_CONSTANT i32 2
%3:_(s1) = G_ICMP intpred(sgt), %0(s32), %2
G_BRCOND %3(s1), %bb.2
G_BR %bb.3
bb.2.if.then:
%7:_(s32) = nsw G_ADD %1, %0
%8:_(s32) = nsw G_ADD %7, %1
G_BR %bb.4
bb.3.if.end:
%4:_(s32) = nsw G_MUL %1, %1
%6:_(s32) = nuw nsw G_ADD %4, %5
bb.4.return:
%10:_(s32) = G_PHI %8(s32), %bb.2, %6(s32), %bb.3
$w0 = COPY %10(s32)
RET_ReallyLR implicit $w0
...
|