eb7d16ea25
mflr is kind of expensive on Power version smaller than 10, so we should schedule the store for the mflr's def away from mflr. In epilogue, the expensive mtlr has no user for its def, so it doesn't matter that the load and the mtlr are back-to-back. Reviewed By: RolandF Differential Revision: https://reviews.llvm.org/D137423
127 lines
4.2 KiB
LLVM
127 lines
4.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s
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;; Formerly crashed, see PR 1508
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target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f128:64:128"
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target triple = "powerpc64-unknown-linux-gnu"
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%struct.Range = type { i64, i64 }
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define void @Bork(i64 %range.0.0, i64 %range.0.1, i64 %size) personality ptr @__gxx_personality_v0 {
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; CHECK-LABEL: Bork:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: mflr 0
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; CHECK-NEXT: std 31, -8(1)
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; CHECK-NEXT: stdu 1, -176(1)
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; CHECK-NEXT: std 0, 192(1)
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; CHECK-NEXT: .cfi_def_cfa_offset 176
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; CHECK-NEXT: .cfi_offset r31, -8
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; CHECK-NEXT: .cfi_offset lr, 16
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; CHECK-NEXT: mr 31, 1
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; CHECK-NEXT: .cfi_def_cfa_register r31
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; CHECK-NEXT: .cfi_offset r27, -40
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; CHECK-NEXT: .cfi_offset r28, -32
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; CHECK-NEXT: .cfi_offset r29, -24
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; CHECK-NEXT: .cfi_offset r30, -16
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; CHECK-NEXT: std 29, 152(31) # 8-byte Folded Spill
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; CHECK-NEXT: mr 29, 3
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; CHECK-NEXT: rldic 3, 5, 3, 29
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; CHECK-NEXT: std 27, 136(31) # 8-byte Folded Spill
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; CHECK-NEXT: std 30, 160(31) # 8-byte Folded Spill
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; CHECK-NEXT: mr 30, 4
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; CHECK-NEXT: addi 3, 3, 15
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; CHECK-NEXT: rldicl 3, 3, 60, 4
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; CHECK-NEXT: mr 27, 1
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; CHECK-NEXT: rldicl 3, 3, 4, 28
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; CHECK-NEXT: addi 4, 31, 176
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; CHECK-NEXT: neg 3, 3
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; CHECK-NEXT: std 28, 144(31) # 8-byte Folded Spill
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; CHECK-NEXT: stdux 4, 1, 3
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; CHECK-NEXT: addi 3, 1, 112
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; CHECK-NEXT: .Ltmp0:
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; CHECK-NEXT: bl Foo
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; CHECK-NEXT: nop
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; CHECK-NEXT: .Ltmp1:
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; CHECK-NEXT: # %bb.1: # %bb30.preheader
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; CHECK-NEXT: addi 28, 31, 120
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; CHECK-NEXT: cmpldi 30, 0
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; CHECK-NEXT: beq 0, .LBB0_4
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; CHECK-NEXT: .LBB0_2: # %cond_true
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; CHECK-NEXT: #
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; CHECK-NEXT: .Ltmp3:
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; CHECK-NEXT: mr 3, 29
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; CHECK-NEXT: mr 4, 28
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; CHECK-NEXT: bl Bar
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; CHECK-NEXT: nop
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; CHECK-NEXT: .Ltmp4:
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; CHECK-NEXT: # %bb.3: # %invcont23
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; CHECK-NEXT: #
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; CHECK-NEXT: ld 3, 128(31)
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; CHECK-NEXT: sub 30, 30, 3
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; CHECK-NEXT: cmpldi 30, 0
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; CHECK-NEXT: bne 0, .LBB0_2
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; CHECK-NEXT: .LBB0_4: # %cleanup
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; CHECK-NEXT: ld 30, 160(31) # 8-byte Folded Reload
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; CHECK-NEXT: ld 29, 152(31) # 8-byte Folded Reload
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; CHECK-NEXT: ld 28, 144(31) # 8-byte Folded Reload
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; CHECK-NEXT: ld 27, 136(31) # 8-byte Folded Reload
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; CHECK-NEXT: ld 1, 0(1)
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; CHECK-NEXT: ld 0, 16(1)
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; CHECK-NEXT: ld 31, -8(1)
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; CHECK-NEXT: mtlr 0
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; CHECK-NEXT: blr
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; CHECK-NEXT: .LBB0_5: # %unwind.loopexit.split-lp
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; CHECK-NEXT: .Ltmp2:
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; CHECK-NEXT: b .LBB0_7
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; CHECK-NEXT: .LBB0_6: # %unwind.loopexit
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; CHECK-NEXT: .Ltmp5:
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; CHECK-NEXT: .LBB0_7: # %unwind
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; CHECK-NEXT: ld 4, 0(1)
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; CHECK-NEXT: mr 1, 27
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; CHECK-NEXT: std 4, 0(1)
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; CHECK-NEXT: bl _Unwind_Resume
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; CHECK-NEXT: nop
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entry:
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%effectiveRange = alloca %struct.Range, align 8 ; <ptr> [#uses=2]
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%tmp4 = call ptr @llvm.stacksave() ; <ptr> [#uses=1]
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%size1 = trunc i64 %size to i32 ; <i32> [#uses=1]
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%tmp17 = alloca ptr, i32 %size1 ; <ptr> [#uses=1]
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invoke void @Foo(ptr %tmp17)
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to label %bb30.preheader unwind label %unwind
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bb30.preheader: ; preds = %entry
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%tmp26 = getelementptr %struct.Range, ptr %effectiveRange, i64 0, i32 1 ; <ptr> [#uses=1]
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br label %bb30
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unwind: ; preds = %cond_true, %entry
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%exn = landingpad {ptr, i32}
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cleanup
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call void @llvm.stackrestore(ptr %tmp4)
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resume { ptr, i32 } %exn
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invcont23: ; preds = %cond_true
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%tmp27 = load i64, ptr %tmp26, align 8 ; <i64> [#uses=1]
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%tmp28 = sub i64 %range_addr.1.0, %tmp27 ; <i64> [#uses=1]
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br label %bb30
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bb30: ; preds = %invcont23, %bb30.preheader
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%range_addr.1.0 = phi i64 [ %tmp28, %invcont23 ], [ %range.0.1, %bb30.preheader ] ; <i64> [#uses=2]
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%tmp33 = icmp eq i64 %range_addr.1.0, 0 ; <i1> [#uses=1]
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br i1 %tmp33, label %cleanup, label %cond_true
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cond_true: ; preds = %bb30
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invoke void @Bar(i64 %range.0.0, ptr %effectiveRange)
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to label %invcont23 unwind label %unwind
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cleanup: ; preds = %bb30
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ret void
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}
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declare ptr @llvm.stacksave() nounwind
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declare void @Foo(ptr)
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declare void @Bar(i64, ptr)
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declare void @llvm.stackrestore(ptr) nounwind
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declare i32 @__gxx_personality_v0(...)
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