23d45e55ed
Previously we wouldn't remove dead copies from basic blocks with successors. The comment said we didn't want to trust the live-in lists. The comment is very old so I'm not sure if that's still a concern today. This patch checks the live-in lists and removes copies from MaybeDeadCopies if they are referenced by any live-ins in any successors. We only do this if the tracksLiveness property is set. If that property is not set, we retain the old behavior.
151 lines
5.0 KiB
LLVM
151 lines
5.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
|
|
; RUN: llc < %s -mtriple=powerpc64le-- -verify-machineinstrs | FileCheck %s
|
|
; RUN: llc < %s -mtriple=powerpc64-- -verify-machineinstrs | FileCheck %s \
|
|
; RUN: --check-prefix=BE
|
|
%struct.__jmp_buf_tag = type { [64 x i64], i32, %struct.__sigset_t, [8 x i8] }
|
|
%struct.__sigset_t = type { [16 x i64] }
|
|
|
|
@.str = private unnamed_addr constant [33 x i8] c"Successfully returned from main\0A\00", align 1
|
|
|
|
; Function Attrs: nounwind
|
|
define dso_local signext i32 @main(i32 signext %argc, ptr nocapture readnone %argv) local_unnamed_addr #0 {
|
|
; CHECK-LABEL: main:
|
|
; CHECK: # %bb.0: # %entry
|
|
; CHECK-NEXT: mfocrf 12, 32
|
|
; CHECK-NEXT: std 31, -8(1)
|
|
; CHECK-NEXT: stw 12, 8(1)
|
|
; CHECK-NEXT: mflr 0
|
|
; CHECK-NEXT: stdu 1, -784(1)
|
|
; CHECK-NEXT: # kill: def $r3 killed $r3 killed $x3
|
|
; CHECK-NEXT: cmpwi 2, 3, 2
|
|
; CHECK-NEXT: li 4, 0
|
|
; CHECK-NEXT: std 0, 800(1)
|
|
; CHECK-NEXT: mr 31, 1
|
|
; CHECK-NEXT: mr 3, 4
|
|
; CHECK-NEXT: blt 2, .LBB0_3
|
|
; CHECK-NEXT: # %bb.1: # %if.end
|
|
; CHECK-NEXT: addi 3, 31, 112
|
|
; CHECK-NEXT: bl _setjmp
|
|
; CHECK-NEXT: nop
|
|
; CHECK-NEXT: # kill: def $r3 killed $r3 killed $x3
|
|
; CHECK-NEXT: cmpwi 3, 0
|
|
; CHECK-NEXT: crorc 20, 10, 2
|
|
; CHECK-NEXT: bc 4, 20, .LBB0_4
|
|
; CHECK-NEXT: # %bb.2: # %if.end5
|
|
; CHECK-NEXT: addis 3, 2, .L.str@toc@ha
|
|
; CHECK-NEXT: addi 3, 3, .L.str@toc@l
|
|
; CHECK-NEXT: bl printf
|
|
; CHECK-NEXT: nop
|
|
; CHECK-NEXT: # kill: def $r3 killed $r3 killed $x3
|
|
; CHECK-NEXT: .LBB0_3: # %return
|
|
; CHECK-NEXT: # kill: def $r3 killed $r3 def $x3
|
|
; CHECK-NEXT: addi 1, 31, 784
|
|
; CHECK-NEXT: ld 0, 16(1)
|
|
; CHECK-NEXT: lwz 12, 8(1)
|
|
; CHECK-NEXT: ld 31, -8(1)
|
|
; CHECK-NEXT: mtlr 0
|
|
; CHECK-NEXT: mtocrf 32, 12
|
|
; CHECK-NEXT: blr
|
|
; CHECK-NEXT: .LBB0_4: # %if.then3
|
|
; CHECK-NEXT: ld 4, 0(1)
|
|
; CHECK-NEXT: stdu 4, -16(1)
|
|
; CHECK-NEXT: addi 3, 1, 96
|
|
; CHECK-NEXT: li 4, -1
|
|
; CHECK-NEXT: stb 4, 0(3)
|
|
; CHECK-NEXT: addi 4, 31, 112
|
|
; CHECK-NEXT: bl test
|
|
; CHECK-NEXT: nop
|
|
;
|
|
; BE-LABEL: main:
|
|
; BE: # %bb.0: # %entry
|
|
; BE-NEXT: mfcr 12
|
|
; BE-NEXT: mflr 0
|
|
; BE-NEXT: std 31, -8(1)
|
|
; BE-NEXT: stw 12, 8(1)
|
|
; BE-NEXT: stdu 1, -800(1)
|
|
; BE-NEXT: li 4, 0
|
|
; BE-NEXT: # kill: def $r3 killed $r3 killed $x3
|
|
; BE-NEXT: cmpwi 2, 3, 2
|
|
; BE-NEXT: mr 3, 4
|
|
; BE-NEXT: std 0, 816(1)
|
|
; BE-NEXT: mr 31, 1
|
|
; BE-NEXT: blt 2, .LBB0_3
|
|
; BE-NEXT: # %bb.1: # %if.end
|
|
; BE-NEXT: addi 3, 31, 128
|
|
; BE-NEXT: bl _setjmp
|
|
; BE-NEXT: nop
|
|
; BE-NEXT: # kill: def $r3 killed $r3 killed $x3
|
|
; BE-NEXT: cmpwi 3, 0
|
|
; BE-NEXT: crorc 20, 10, 2
|
|
; BE-NEXT: bc 4, 20, .LBB0_4
|
|
; BE-NEXT: # %bb.2: # %if.end5
|
|
; BE-NEXT: addis 3, 2, .L.str@toc@ha
|
|
; BE-NEXT: addi 3, 3, .L.str@toc@l
|
|
; BE-NEXT: bl printf
|
|
; BE-NEXT: nop
|
|
; BE-NEXT: # kill: def $r3 killed $r3 killed $x3
|
|
; BE-NEXT: .LBB0_3: # %return
|
|
; BE-NEXT: # kill: def $r3 killed $r3 def $x3
|
|
; BE-NEXT: addi 1, 31, 800
|
|
; BE-NEXT: ld 0, 16(1)
|
|
; BE-NEXT: lwz 12, 8(1)
|
|
; BE-NEXT: ld 31, -8(1)
|
|
; BE-NEXT: mtlr 0
|
|
; BE-NEXT: mtcrf 32, 12 # cr2
|
|
; BE-NEXT: blr
|
|
; BE-NEXT: .LBB0_4: # %if.then3
|
|
; BE-NEXT: ld 4, 0(1)
|
|
; BE-NEXT: stdu 4, -16(1)
|
|
; BE-NEXT: addi 3, 1, 112
|
|
; BE-NEXT: li 4, -1
|
|
; BE-NEXT: stb 4, 0(3)
|
|
; BE-NEXT: addi 4, 31, 128
|
|
; BE-NEXT: bl test
|
|
; BE-NEXT: nop
|
|
entry:
|
|
%env_buffer = alloca [1 x %struct.__jmp_buf_tag], align 16
|
|
%cmp = icmp slt i32 %argc, 2
|
|
br i1 %cmp, label %return, label %if.end
|
|
|
|
if.end: ; preds = %entry
|
|
call void @llvm.lifetime.start.p0(i64 656, ptr nonnull %env_buffer) #5
|
|
%call = call signext i32 @_setjmp(ptr nonnull %env_buffer) #6
|
|
%cmp1 = icmp ne i32 %argc, 2
|
|
%cmp2 = icmp eq i32 %call, 0
|
|
%or.cond = and i1 %cmp1, %cmp2
|
|
br i1 %or.cond, label %if.then3, label %if.end5
|
|
|
|
if.then3: ; preds = %if.end
|
|
%0 = alloca [8 x i8], align 16
|
|
store i8 -1, ptr %0, align 16
|
|
call void @test(ptr nonnull %0, ptr nonnull %env_buffer) #7
|
|
unreachable
|
|
|
|
if.end5: ; preds = %if.end
|
|
%call6 = call signext i32 (ptr, ...) @printf(ptr nonnull dereferenceable(1) @.str)
|
|
call void @llvm.lifetime.end.p0(i64 656, ptr nonnull %env_buffer) #5
|
|
br label %return
|
|
|
|
return: ; preds = %entry, %if.end5
|
|
%retval.0 = phi i32 [ %call6, %if.end5 ], [ 0, %entry ]
|
|
ret i32 %retval.0
|
|
}
|
|
|
|
; Function Attrs: argmemonly nofree nosync nounwind willreturn
|
|
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture)
|
|
|
|
; Function Attrs: nounwind returns_twice
|
|
declare signext i32 @_setjmp(ptr) local_unnamed_addr
|
|
|
|
; Function Attrs: noreturn
|
|
declare void @test(ptr, ptr) local_unnamed_addr
|
|
|
|
; Function Attrs: nofree nounwind
|
|
declare noundef signext i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr
|
|
|
|
; Function Attrs: argmemonly nofree nosync nounwind willreturn
|
|
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture)
|
|
|
|
attributes #0 = { nounwind }
|
|
attributes #6 = { nounwind returns_twice }
|