/
entry-block-shuffled.ll
75 lines (68 loc) · 3.44 KB
/
entry-block-shuffled.ll
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -mergeicmps -verify-dom-info -mtriple=x86_64-unknown-unknown -S | FileCheck %s
%S = type { i32, i32, i32, i32 }
; The entry block is part of the chain. It however can not be merged. We need to
; make sure that the control flow is still consistent (goes through each of the
; blocks).
define zeroext i1 @opeq1(
; CHECK-LABEL: @opeq1(
; CHECK-NEXT: "land.rhs.i+land.rhs.i.2":
; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds [[S:%.*]], %S* [[A:%.*]], i64 0, i32 0
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[S]], %S* [[B:%.*]], i64 0, i32 0
; CHECK-NEXT: [[CSTR:%.*]] = bitcast i32* [[TMP0]] to i8*
; CHECK-NEXT: [[CSTR3:%.*]] = bitcast i32* [[TMP1]] to i8*
; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* [[CSTR]], i8* [[CSTR3]], i64 8)
; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[MEMCMP]], 0
; CHECK-NEXT: br i1 [[TMP2]], label [[ENTRY2:%.*]], label [[OPEQ1_EXIT:%.*]]
; CHECK: entry2:
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds [[S]], %S* [[A]], i64 0, i32 3
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds [[S]], %S* [[B]], i64 0, i32 2
; CHECK-NEXT: [[TMP5:%.*]] = load i32, i32* [[TMP3]]
; CHECK-NEXT: [[TMP6:%.*]] = load i32, i32* [[TMP4]]
; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i32 [[TMP5]], [[TMP6]]
; CHECK-NEXT: br i1 [[TMP7]], label [[LAND_RHS_I_31:%.*]], label [[OPEQ1_EXIT]]
; CHECK: land.rhs.i.31:
; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds [[S]], %S* [[A]], i64 0, i32 3
; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds [[S]], %S* [[B]], i64 0, i32 3
; CHECK-NEXT: [[TMP10:%.*]] = load i32, i32* [[TMP8]]
; CHECK-NEXT: [[TMP11:%.*]] = load i32, i32* [[TMP9]]
; CHECK-NEXT: [[TMP12:%.*]] = icmp eq i32 [[TMP10]], [[TMP11]]
; CHECK-NEXT: br label [[OPEQ1_EXIT]]
; CHECK: opeq1.exit:
; CHECK-NEXT: [[TMP13:%.*]] = phi i1 [ [[TMP12]], [[LAND_RHS_I_31]] ], [ false, [[ENTRY2]] ], [ false, %"land.rhs.i+land.rhs.i.2" ]
; CHECK-NEXT: ret i1 [[TMP13]]
;
%S* nocapture readonly dereferenceable(16) %a,
%S* nocapture readonly dereferenceable(16) %b) local_unnamed_addr #0 {
entry:
%first.i = getelementptr inbounds %S, %S* %a, i64 0, i32 3
%0 = load i32, i32* %first.i, align 4
%first1.i = getelementptr inbounds %S, %S* %b, i64 0, i32 2
%1 = load i32, i32* %first1.i, align 4
%cmp.i = icmp eq i32 %0, %1
br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit
land.rhs.i:
%second.i = getelementptr inbounds %S, %S* %a, i64 0, i32 0
%2 = load i32, i32* %second.i, align 4
%second2.i = getelementptr inbounds %S, %S* %b, i64 0, i32 0
%3 = load i32, i32* %second2.i, align 4
%cmp3.i = icmp eq i32 %2, %3
br i1 %cmp3.i, label %land.rhs.i.2, label %opeq1.exit
land.rhs.i.2:
%third.i = getelementptr inbounds %S, %S* %a, i64 0, i32 1
%4 = load i32, i32* %third.i, align 4
%third2.i = getelementptr inbounds %S, %S* %b, i64 0, i32 1
%5 = load i32, i32* %third2.i, align 4
%cmp4.i = icmp eq i32 %4, %5
br i1 %cmp4.i, label %land.rhs.i.3, label %opeq1.exit
land.rhs.i.3:
%fourth.i = getelementptr inbounds %S, %S* %a, i64 0, i32 3
%6 = load i32, i32* %fourth.i, align 4
%fourth2.i = getelementptr inbounds %S, %S* %b, i64 0, i32 3
%7 = load i32, i32* %fourth2.i, align 4
%cmp5.i = icmp eq i32 %6, %7
br label %opeq1.exit
opeq1.exit:
%8 = phi i1 [ false, %entry ], [ false, %land.rhs.i], [ false, %land.rhs.i.2 ], [ %cmp5.i, %land.rhs.i.3 ]
ret i1 %8
}