xref: /llvm-project/llvm/test/DebugInfo/X86/codegenprepare-rollback.ll (revision 094572701dce4aaf36f4521d6cf750420d39f206)
1; RUN: opt -S -debugify -codegenprepare %s -o - | FileCheck %s --check-prefix=DEBUGIFY
2; RUN: opt -S -debugify -codegenprepare %s -o - --try-experimental-debuginfo-iterators | FileCheck %s --check-prefix=DEBUGIFY
3;
4; Copied from codegen-prepare-addrmode-sext.ll -- for the twoArgsNoPromotion
5; function, CGP attempts a type promotion transaction on the sext to replace
6; it with %add, but then rolls it back. This involves re-inserting the sext
7; instruction between two dbg.value intrinsics, and un-RAUWing the users of
8; the sext.
9; This test checks that this works correctly in both dbg.value mode, but also
10; RemoveDIs non-intrinsic debug-info mode.
11
12target datalayout = "e-i64:64-f80:128-s:64-n8:16:32:64-S128"
13target triple = "x86_64-apple-macosx"
14
15; DEBUGIFY-LABEL: @twoArgsNoPromotion
16; DEBUGIFY-NEXT: %add = add
17; DEBUGIFY-NEXT: #dbg_value(i32 %add,
18; DEBUGIFY-NEXT: %sextadd = sext
19; DEBUGIFY-NEXT: #dbg_value(i64 %sextadd,
20; DEBUGIFY-NEXT: %arrayidx = getelementptr
21; DEBUGIFY-NEXT: #dbg_value(ptr %arrayidx,
22; DEBUGIFY-NEXT: %res = load i8,
23; DEBUGIFY-NEXT: #dbg_value(i8 %res,
24; DEBUGIFY-NEXT: ret i8 %res,
25define i8 @twoArgsNoPromotion(i32 %arg1, i32 %arg2, ptr %base) {
26  %add = add nsw i32 %arg1, %arg2
27  %sextadd = sext i32 %add to i64
28  %arrayidx = getelementptr inbounds i8, ptr %base, i64 %sextadd
29  %res = load i8, ptr %arrayidx
30  ret i8 %res
31}
32
33