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