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llvm-project/llvm/test/CodeGen/PowerPC/xray-ret-is-terminator.ll

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[PowerPC] Fix assert from machine verify pass that missing undef register flag Fix assert about using an undefined physical register in machine instruction verify pass. The reason is that register flag undef is missing when doing transformation from If Conversion Pass. ``` Bad machine code: Using an undefined physical register - function: func_65 - basic block: %bb.0 entry (0x10024740738) - instruction: BCLR killed $cr5lt, implicit $lr8, implicit $rm, implicit undef $x3 - operand 0: killed $cr5lt LLVM ERROR: Found 1 machine code errors. ``` There are also other existing testcases with same issue. So I add -verify-machineinstrs option to open verifying. Differential Revision: https://reviews.llvm.org/D55408 llvm-svn: 348566
2018-12-07 13:25:16 +08:00
; RUN: llc -verify-machineinstrs -o - -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %s
[XRay] support conditional return on PPC. Summary: Conditional returns were not taken into consideration at all. Implement them by turning them into jumps and normal returns. This means there is a slightly higher performance penalty for conditional returns, but this is the best we can do, and it still disturbs little of the rest. Reviewers: dberris, echristo Subscribers: sanjoy, nemanjai, hiraditya, kbarton, llvm-commits Differential Revision: https://reviews.llvm.org/D38102 llvm-svn: 314005
2017-09-23 02:30:02 +08:00
define void @ILLBeBack() #0 {
[llvm] Fix missing FileCheck directive colons https://reviews.llvm.org/D77352
2020-04-03 06:28:32 +08:00
; CHECK-LABEL: @ILLBeBack
[FIX] Forces shrink wrapping to consider any memory access as aliasing with the stack Summary: Relate bug: https://bugs.llvm.org/show_bug.cgi?id=37472 The shrink wrapping pass prematurally restores the stack, at a point where the stack might still be accessed. Taking an exception can cause the stack to be corrupted. As a first approach, this patch is overly conservative, assuming that any instruction that may load or store could access the stack. Reviewers: dmgreen, qcolombet Reviewed By: qcolombet Subscribers: simpal01, efriedma, eli.friedman, javed.absar, llvm-commits, eugenis, chill, carwil, thegameg Tags: #llvm Differential Revision: https://reviews.llvm.org/D63152 llvm-svn: 363265
2019-06-13 21:56:19 +08:00
; CHECK: bne {{[0-9]+}}, [[LABEL:\.[a-zA-Z0-9_]+]]
[XRay] support conditional return on PPC. Summary: Conditional returns were not taken into consideration at all. Implement them by turning them into jumps and normal returns. This means there is a slightly higher performance penalty for conditional returns, but this is the best we can do, and it still disturbs little of the rest. Reviewers: dberris, echristo Subscribers: sanjoy, nemanjai, hiraditya, kbarton, llvm-commits Differential Revision: https://reviews.llvm.org/D38102 llvm-svn: 314005
2017-09-23 02:30:02 +08:00
; CHECK: [[LABEL]]:
[FIX] Forces shrink wrapping to consider any memory access as aliasing with the stack Summary: Relate bug: https://bugs.llvm.org/show_bug.cgi?id=37472 The shrink wrapping pass prematurally restores the stack, at a point where the stack might still be accessed. Taking an exception can cause the stack to be corrupted. As a first approach, this patch is overly conservative, assuming that any instruction that may load or store could access the stack. Reviewers: dmgreen, qcolombet Reviewed By: qcolombet Subscribers: simpal01, efriedma, eli.friedman, javed.absar, llvm-commits, eugenis, chill, carwil, thegameg Tags: #llvm Differential Revision: https://reviews.llvm.org/D63152 llvm-svn: 363265
2019-06-13 21:56:19 +08:00
; CHECK: bl __xray_FunctionExit
[XRay] support conditional return on PPC. Summary: Conditional returns were not taken into consideration at all. Implement them by turning them into jumps and normal returns. This means there is a slightly higher performance penalty for conditional returns, but this is the best we can do, and it still disturbs little of the rest. Reviewers: dberris, echristo Subscribers: sanjoy, nemanjai, hiraditya, kbarton, llvm-commits Differential Revision: https://reviews.llvm.org/D38102 llvm-svn: 314005
2017-09-23 02:30:02 +08:00
bb:
br i1 undef, label %bb1, label %bb8
bb1:
%tmp = tail call i64 asm sideeffect "", "=&r,=*m,b,r,*m,~{cc}"(i64* nonnull undef, i64* nonnull undef, i64 1, i64* nonnull undef)
%tmp2 = icmp eq i64 %tmp, 0
br i1 %tmp2, label %bb3, label %bb8
bb3:
%tmp4 = tail call i64 asm sideeffect "", "=&r,=*m,b,r,r,*m,~{cc}"(i64* undef, i64* undef, i64 0, i64 undef, i64* undef)
%tmp5 = icmp eq i64 0, %tmp4
br i1 %tmp5, label %bb6, label %bb3
bb6:
br i1 undef, label %bb7, label %bb8
bb7:
tail call void () undef()
ret void
bb8:
ret void
}
attributes #0 = { "function-instrument"="xray-always" }