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; RUN: opt -codegenprepare -S -mtriple=x86_64 < %s | FileCheck %s
@exit_addr = constant i8* blockaddress(@gep_unmerging, %exit)
@op1_addr = constant i8* blockaddress(@gep_unmerging, %op1)
@op2_addr = constant i8* blockaddress(@gep_unmerging, %op2)
@op3_addr = constant i8* blockaddress(@gep_unmerging, %op3)
@dummy = global i8 0
define void @gep_unmerging(i1 %pred, i8* %p0) {
entry:
%table = alloca [256 x i8*]
%table_0 = getelementptr [256 x i8*], [256 x i8*]* %table, i64 0, i64 0
%table_1 = getelementptr [256 x i8*], [256 x i8*]* %table, i64 0, i64 1
%table_2 = getelementptr [256 x i8*], [256 x i8*]* %table, i64 0, i64 2
%table_3 = getelementptr [256 x i8*], [256 x i8*]* %table, i64 0, i64 3
%exit_a = load i8*, i8** @exit_addr
%op1_a = load i8*, i8** @op1_addr
%op2_a = load i8*, i8** @op2_addr
%op3_a = load i8*, i8** @op3_addr
store i8* %exit_a, i8** %table_0
store i8* %op1_a, i8** %table_1
store i8* %op2_a, i8** %table_2
store i8* %op3_a, i8** %table_3
br label %indirectbr
op1:
; CHECK-LABEL: op1:
; CHECK-NEXT: %p1_inc2 = getelementptr i8, i8* %p_preinc, i64 3
; CHECK-NEXT: %p1_inc1 = getelementptr i8, i8* %p_preinc, i64 2
%p1_inc2 = getelementptr i8, i8* %p_preinc, i64 3
%p1_inc1 = getelementptr i8, i8* %p_preinc, i64 2
%a10 = load i8, i8* %p_postinc
%a11 = load i8, i8* %p1_inc1
%a12 = add i8 %a10, %a11
store i8 %a12, i8* @dummy
br i1 %pred, label %indirectbr, label %exit
op2:
; CHECK-LABEL: op2:
; CHECK-NEXT: %p2_inc = getelementptr i8, i8* %p_preinc, i64 2
%p2_inc = getelementptr i8, i8* %p_preinc, i64 2
%a2 = load i8, i8* %p_postinc
store i8 %a2, i8* @dummy
br i1 %pred, label %indirectbr, label %exit
op3:
br i1 %pred, label %indirectbr, label %exit
indirectbr:
%p_preinc = phi i8* [%p0, %entry], [%p1_inc2, %op1], [%p2_inc, %op2], [%p_postinc, %op3]
%p_postinc = getelementptr i8, i8* %p_preinc, i64 1
%next_op = load i8, i8* %p_preinc
%p_zext = zext i8 %next_op to i64
%slot = getelementptr [256 x i8*], [256 x i8*]* %table, i64 0, i64 %p_zext
%target = load i8*, i8** %slot
indirectbr i8* %target, [label %exit, label %op1, label %op2]
exit:
ret void
}
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