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https://github.com/RPCS3/llvm-mirror.git
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d4ac5d338c
When `-fstack-clash-protection` is enabled and stack has to be realigned, some parts of redzone is written prior the probe, so probe might overwrite content already written in redzone. To avoid it, we have to make sure the first probe is at full probe size or is the last probe so that we can skip redzone. It also fixes violation of ABI under PPC where `r1` isn't updated atomically. This fixes https://bugs.llvm.org/show_bug.cgi?id=49903. Reviewed By: jsji Differential Revision: https://reviews.llvm.org/D100290
475 lines
14 KiB
LLVM
475 lines
14 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -ppc-asm-full-reg-names -verify-machineinstrs \
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; RUN: -mtriple=powerpc64le-linux-gnu < %s | FileCheck \
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; RUN: -check-prefix=CHECK-LE %s
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; RUN: llc -ppc-asm-full-reg-names -verify-machineinstrs \
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; RUN: -mtriple=powerpc64-linux-gnu < %s | FileCheck \
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; RUN: -check-prefix=CHECK-BE %s
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; RUN: llc -ppc-asm-full-reg-names -verify-machineinstrs \
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; RUN: -mtriple=powerpc-linux-gnu < %s | FileCheck \
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; RUN: -check-prefix=CHECK-32 %s
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; Free probe
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define i8 @f0() #0 nounwind {
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; CHECK-LE-LABEL: f0:
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; CHECK-LE: # %bb.0: # %entry
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; CHECK-LE-NEXT: li r3, 3
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; CHECK-LE-NEXT: stb r3, -64(r1)
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; CHECK-LE-NEXT: lbz r3, -64(r1)
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; CHECK-LE-NEXT: blr
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;
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; CHECK-BE-LABEL: f0:
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; CHECK-BE: # %bb.0: # %entry
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; CHECK-BE-NEXT: li r3, 3
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; CHECK-BE-NEXT: stb r3, -64(r1)
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; CHECK-BE-NEXT: lbz r3, -64(r1)
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; CHECK-BE-NEXT: blr
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;
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; CHECK-32-LABEL: f0:
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; CHECK-32: # %bb.0: # %entry
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; CHECK-32-NEXT: stwu r1, -80(r1)
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; CHECK-32-NEXT: li r3, 3
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; CHECK-32-NEXT: stb r3, 16(r1)
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; CHECK-32-NEXT: lbz r3, 16(r1)
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; CHECK-32-NEXT: addi r1, r1, 80
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; CHECK-32-NEXT: blr
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entry:
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%a = alloca i8, i64 64
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%b = getelementptr inbounds i8, i8* %a, i64 63
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store volatile i8 3, i8* %a
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%c = load volatile i8, i8* %a
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ret i8 %c
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}
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define i8 @f1() #0 "stack-probe-size"="0" nounwind {
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; CHECK-LE-LABEL: f1:
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; CHECK-LE: # %bb.0: # %entry
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; CHECK-LE-NEXT: mr r0, r1
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; CHECK-LE-NEXT: li r12, 259
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; CHECK-LE-NEXT: mtctr r12
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; CHECK-LE-NEXT: .LBB1_1: # %entry
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; CHECK-LE-NEXT: #
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; CHECK-LE-NEXT: stdu r0, -16(r1)
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; CHECK-LE-NEXT: bdnz .LBB1_1
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; CHECK-LE-NEXT: # %bb.2: # %entry
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; CHECK-LE-NEXT: li r3, 3
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; CHECK-LE-NEXT: stb r3, 48(r1)
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; CHECK-LE-NEXT: lbz r3, 48(r1)
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; CHECK-LE-NEXT: addi r1, r1, 4144
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; CHECK-LE-NEXT: blr
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;
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; CHECK-BE-LABEL: f1:
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; CHECK-BE: # %bb.0: # %entry
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; CHECK-BE-NEXT: mr r0, r1
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; CHECK-BE-NEXT: li r12, 260
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; CHECK-BE-NEXT: mtctr r12
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; CHECK-BE-NEXT: .LBB1_1: # %entry
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; CHECK-BE-NEXT: #
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; CHECK-BE-NEXT: stdu r0, -16(r1)
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; CHECK-BE-NEXT: bdnz .LBB1_1
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; CHECK-BE-NEXT: # %bb.2: # %entry
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; CHECK-BE-NEXT: li r3, 3
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; CHECK-BE-NEXT: stb r3, 64(r1)
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; CHECK-BE-NEXT: lbz r3, 64(r1)
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; CHECK-BE-NEXT: addi r1, r1, 4160
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; CHECK-BE-NEXT: blr
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;
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; CHECK-32-LABEL: f1:
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; CHECK-32: # %bb.0: # %entry
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; CHECK-32-NEXT: mr r0, r1
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; CHECK-32-NEXT: li r12, 257
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; CHECK-32-NEXT: mtctr r12
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; CHECK-32-NEXT: .LBB1_1: # %entry
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; CHECK-32-NEXT: #
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; CHECK-32-NEXT: stwu r0, -16(r1)
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; CHECK-32-NEXT: bdnz .LBB1_1
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; CHECK-32-NEXT: # %bb.2: # %entry
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; CHECK-32-NEXT: li r3, 3
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; CHECK-32-NEXT: sub r0, r1, r0
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; CHECK-32-NEXT: stb r3, 16(r1)
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; CHECK-32-NEXT: sub r0, r1, r0
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; CHECK-32-NEXT: lbz r3, 16(r1)
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; CHECK-32-NEXT: addi r1, r1, 4112
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; CHECK-32-NEXT: blr
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entry:
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%a = alloca i8, i64 4096
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%b = getelementptr inbounds i8, i8* %a, i64 63
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store volatile i8 3, i8* %a
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%c = load volatile i8, i8* %a
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ret i8 %c
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}
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define i8 @f2() #0 nounwind {
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; CHECK-LE-LABEL: f2:
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; CHECK-LE: # %bb.0: # %entry
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; CHECK-LE-NEXT: mr r0, r1
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; CHECK-LE-NEXT: stdu r0, -48(r1)
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; CHECK-LE-NEXT: li r12, 16
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; CHECK-LE-NEXT: mtctr r12
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; CHECK-LE-NEXT: .LBB2_1: # %entry
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; CHECK-LE-NEXT: #
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; CHECK-LE-NEXT: stdu r0, -4096(r1)
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; CHECK-LE-NEXT: bdnz .LBB2_1
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; CHECK-LE-NEXT: # %bb.2: # %entry
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; CHECK-LE-NEXT: li r3, 3
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; CHECK-LE-NEXT: stb r3, 48(r1)
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; CHECK-LE-NEXT: lbz r3, 48(r1)
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; CHECK-LE-NEXT: ld r1, 0(r1)
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; CHECK-LE-NEXT: blr
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;
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; CHECK-BE-LABEL: f2:
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; CHECK-BE: # %bb.0: # %entry
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; CHECK-BE-NEXT: mr r0, r1
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; CHECK-BE-NEXT: stdu r0, -64(r1)
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; CHECK-BE-NEXT: li r12, 16
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; CHECK-BE-NEXT: mtctr r12
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; CHECK-BE-NEXT: .LBB2_1: # %entry
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; CHECK-BE-NEXT: #
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; CHECK-BE-NEXT: stdu r0, -4096(r1)
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; CHECK-BE-NEXT: bdnz .LBB2_1
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; CHECK-BE-NEXT: # %bb.2: # %entry
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; CHECK-BE-NEXT: li r3, 3
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; CHECK-BE-NEXT: stb r3, 64(r1)
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; CHECK-BE-NEXT: lbz r3, 64(r1)
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; CHECK-BE-NEXT: ld r1, 0(r1)
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; CHECK-BE-NEXT: blr
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;
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; CHECK-32-LABEL: f2:
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; CHECK-32: # %bb.0: # %entry
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; CHECK-32-NEXT: mr r0, r1
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; CHECK-32-NEXT: stwu r0, -16(r1)
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; CHECK-32-NEXT: li r12, 16
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; CHECK-32-NEXT: mtctr r12
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; CHECK-32-NEXT: .LBB2_1: # %entry
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; CHECK-32-NEXT: #
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; CHECK-32-NEXT: stwu r0, -4096(r1)
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; CHECK-32-NEXT: bdnz .LBB2_1
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; CHECK-32-NEXT: # %bb.2: # %entry
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; CHECK-32-NEXT: sub r0, r1, r0
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; CHECK-32-NEXT: li r3, 3
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; CHECK-32-NEXT: sub r0, r1, r0
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; CHECK-32-NEXT: stb r3, 16(r1)
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; CHECK-32-NEXT: mr r0, r31
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; CHECK-32-NEXT: lbz r3, 16(r1)
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; CHECK-32-NEXT: lwz r31, 0(r1)
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; CHECK-32-NEXT: mr r1, r31
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; CHECK-32-NEXT: mr r31, r0
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; CHECK-32-NEXT: blr
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entry:
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%a = alloca i8, i64 65536
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%b = getelementptr inbounds i8, i8* %a, i64 63
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store volatile i8 3, i8* %a
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%c = load volatile i8, i8* %a
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ret i8 %c
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}
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define i8 @f3() #0 "stack-probe-size"="32768" nounwind {
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; CHECK-LE-LABEL: f3:
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; CHECK-LE: # %bb.0: # %entry
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; CHECK-LE-NEXT: mr r0, r1
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; CHECK-LE-NEXT: stdu r0, -48(r1)
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; CHECK-LE-NEXT: stdu r0, -32768(r1)
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; CHECK-LE-NEXT: stdu r0, -32768(r1)
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; CHECK-LE-NEXT: li r3, 3
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; CHECK-LE-NEXT: stb r3, 48(r1)
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; CHECK-LE-NEXT: lbz r3, 48(r1)
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; CHECK-LE-NEXT: ld r1, 0(r1)
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; CHECK-LE-NEXT: blr
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;
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; CHECK-BE-LABEL: f3:
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; CHECK-BE: # %bb.0: # %entry
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; CHECK-BE-NEXT: mr r0, r1
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; CHECK-BE-NEXT: stdu r0, -64(r1)
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; CHECK-BE-NEXT: stdu r0, -32768(r1)
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; CHECK-BE-NEXT: stdu r0, -32768(r1)
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; CHECK-BE-NEXT: li r3, 3
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; CHECK-BE-NEXT: stb r3, 64(r1)
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; CHECK-BE-NEXT: lbz r3, 64(r1)
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; CHECK-BE-NEXT: ld r1, 0(r1)
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; CHECK-BE-NEXT: blr
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;
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; CHECK-32-LABEL: f3:
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; CHECK-32: # %bb.0: # %entry
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; CHECK-32-NEXT: mr r0, r1
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; CHECK-32-NEXT: stwu r0, -16(r1)
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; CHECK-32-NEXT: stwu r0, -32768(r1)
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; CHECK-32-NEXT: stwu r0, -32768(r1)
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; CHECK-32-NEXT: sub r0, r1, r0
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; CHECK-32-NEXT: li r3, 3
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; CHECK-32-NEXT: sub r0, r1, r0
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; CHECK-32-NEXT: stb r3, 16(r1)
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; CHECK-32-NEXT: mr r0, r31
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; CHECK-32-NEXT: lbz r3, 16(r1)
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; CHECK-32-NEXT: lwz r31, 0(r1)
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; CHECK-32-NEXT: mr r1, r31
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; CHECK-32-NEXT: mr r31, r0
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; CHECK-32-NEXT: blr
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entry:
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%a = alloca i8, i64 65536
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%b = getelementptr inbounds i8, i8* %a, i64 63
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store volatile i8 3, i8* %a
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%c = load volatile i8, i8* %a
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ret i8 %c
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}
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; Same as f2, but without protection.
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define i8 @f4() nounwind {
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; CHECK-LE-LABEL: f4:
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; CHECK-LE: # %bb.0: # %entry
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; CHECK-LE-NEXT: lis r0, -2
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; CHECK-LE-NEXT: ori r0, r0, 65488
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; CHECK-LE-NEXT: stdux r1, r1, r0
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; CHECK-LE-NEXT: li r3, 3
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; CHECK-LE-NEXT: stb r3, 48(r1)
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; CHECK-LE-NEXT: lbz r3, 48(r1)
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; CHECK-LE-NEXT: ld r1, 0(r1)
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; CHECK-LE-NEXT: blr
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;
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; CHECK-BE-LABEL: f4:
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; CHECK-BE: # %bb.0: # %entry
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; CHECK-BE-NEXT: lis r0, -2
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; CHECK-BE-NEXT: ori r0, r0, 65472
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; CHECK-BE-NEXT: stdux r1, r1, r0
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; CHECK-BE-NEXT: li r3, 3
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; CHECK-BE-NEXT: stb r3, 64(r1)
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; CHECK-BE-NEXT: lbz r3, 64(r1)
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; CHECK-BE-NEXT: ld r1, 0(r1)
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; CHECK-BE-NEXT: blr
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;
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; CHECK-32-LABEL: f4:
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; CHECK-32: # %bb.0: # %entry
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; CHECK-32-NEXT: lis r0, -2
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; CHECK-32-NEXT: ori r0, r0, 65520
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; CHECK-32-NEXT: stwux r1, r1, r0
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; CHECK-32-NEXT: li r3, 3
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; CHECK-32-NEXT: sub r0, r1, r0
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; CHECK-32-NEXT: stb r3, 16(r1)
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; CHECK-32-NEXT: mr r0, r31
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; CHECK-32-NEXT: lbz r3, 16(r1)
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; CHECK-32-NEXT: lwz r31, 0(r1)
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; CHECK-32-NEXT: mr r1, r31
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; CHECK-32-NEXT: mr r31, r0
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; CHECK-32-NEXT: blr
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entry:
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%a = alloca i8, i64 65536
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%b = getelementptr inbounds i8, i8* %a, i64 63
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store volatile i8 3, i8* %a
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%c = load volatile i8, i8* %a
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ret i8 %c
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}
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define i8 @f5() #0 "stack-probe-size"="65536" nounwind {
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; CHECK-LE-LABEL: f5:
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; CHECK-LE: # %bb.0: # %entry
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; CHECK-LE-NEXT: mr r0, r1
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; CHECK-LE-NEXT: stdu r0, -48(r1)
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; CHECK-LE-NEXT: li r12, 16
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; CHECK-LE-NEXT: mtctr r12
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; CHECK-LE-NEXT: lis r12, -1
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; CHECK-LE-NEXT: ori r12, r12, 0
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; CHECK-LE-NEXT: .LBB5_1: # %entry
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; CHECK-LE-NEXT: #
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; CHECK-LE-NEXT: stdux r0, r1, r12
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; CHECK-LE-NEXT: bdnz .LBB5_1
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; CHECK-LE-NEXT: # %bb.2: # %entry
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; CHECK-LE-NEXT: li r3, 3
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; CHECK-LE-NEXT: stb r3, 48(r1)
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; CHECK-LE-NEXT: lbz r3, 48(r1)
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; CHECK-LE-NEXT: ld r1, 0(r1)
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; CHECK-LE-NEXT: blr
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;
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; CHECK-BE-LABEL: f5:
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; CHECK-BE: # %bb.0: # %entry
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; CHECK-BE-NEXT: mr r0, r1
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; CHECK-BE-NEXT: stdu r0, -64(r1)
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; CHECK-BE-NEXT: li r12, 16
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; CHECK-BE-NEXT: mtctr r12
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; CHECK-BE-NEXT: lis r12, -1
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; CHECK-BE-NEXT: ori r12, r12, 0
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; CHECK-BE-NEXT: .LBB5_1: # %entry
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; CHECK-BE-NEXT: #
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; CHECK-BE-NEXT: stdux r0, r1, r12
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; CHECK-BE-NEXT: bdnz .LBB5_1
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; CHECK-BE-NEXT: # %bb.2: # %entry
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; CHECK-BE-NEXT: li r3, 3
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; CHECK-BE-NEXT: stb r3, 64(r1)
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; CHECK-BE-NEXT: lbz r3, 64(r1)
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; CHECK-BE-NEXT: ld r1, 0(r1)
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; CHECK-BE-NEXT: blr
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;
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; CHECK-32-LABEL: f5:
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; CHECK-32: # %bb.0: # %entry
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; CHECK-32-NEXT: mr r0, r1
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; CHECK-32-NEXT: stwu r0, -16(r1)
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; CHECK-32-NEXT: li r12, 16
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; CHECK-32-NEXT: mtctr r12
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; CHECK-32-NEXT: lis r12, -1
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; CHECK-32-NEXT: ori r12, r12, 0
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; CHECK-32-NEXT: .LBB5_1: # %entry
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; CHECK-32-NEXT: #
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; CHECK-32-NEXT: stwux r0, r1, r12
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; CHECK-32-NEXT: bdnz .LBB5_1
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; CHECK-32-NEXT: # %bb.2: # %entry
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; CHECK-32-NEXT: sub r0, r1, r0
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; CHECK-32-NEXT: li r3, 3
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; CHECK-32-NEXT: sub r0, r1, r0
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; CHECK-32-NEXT: stb r3, 16(r1)
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; CHECK-32-NEXT: mr r0, r31
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; CHECK-32-NEXT: lbz r3, 16(r1)
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; CHECK-32-NEXT: lwz r31, 0(r1)
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; CHECK-32-NEXT: mr r1, r31
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; CHECK-32-NEXT: mr r31, r0
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; CHECK-32-NEXT: blr
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entry:
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%a = alloca i8, i64 1048576
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%b = getelementptr inbounds i8, i8* %a, i64 63
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store volatile i8 3, i8* %a
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%c = load volatile i8, i8* %a
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ret i8 %c
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}
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define i8 @f6() #0 nounwind {
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; CHECK-LE-LABEL: f6:
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; CHECK-LE: # %bb.0: # %entry
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; CHECK-LE-NEXT: mr r0, r1
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; CHECK-LE-NEXT: stdu r0, -48(r1)
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; CHECK-LE-NEXT: lis r12, 4
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; CHECK-LE-NEXT: ori r12, r12, 0
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; CHECK-LE-NEXT: mtctr r12
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; CHECK-LE-NEXT: .LBB6_1: # %entry
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; CHECK-LE-NEXT: #
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; CHECK-LE-NEXT: stdu r0, -4096(r1)
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; CHECK-LE-NEXT: bdnz .LBB6_1
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; CHECK-LE-NEXT: # %bb.2: # %entry
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; CHECK-LE-NEXT: li r3, 3
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; CHECK-LE-NEXT: stb r3, 48(r1)
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; CHECK-LE-NEXT: lbz r3, 48(r1)
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; CHECK-LE-NEXT: ld r1, 0(r1)
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; CHECK-LE-NEXT: blr
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;
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; CHECK-BE-LABEL: f6:
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; CHECK-BE: # %bb.0: # %entry
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; CHECK-BE-NEXT: mr r0, r1
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; CHECK-BE-NEXT: stdu r0, -64(r1)
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; CHECK-BE-NEXT: lis r12, 4
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; CHECK-BE-NEXT: ori r12, r12, 0
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; CHECK-BE-NEXT: mtctr r12
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; CHECK-BE-NEXT: .LBB6_1: # %entry
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; CHECK-BE-NEXT: #
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; CHECK-BE-NEXT: stdu r0, -4096(r1)
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; CHECK-BE-NEXT: bdnz .LBB6_1
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; CHECK-BE-NEXT: # %bb.2: # %entry
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; CHECK-BE-NEXT: li r3, 3
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; CHECK-BE-NEXT: stb r3, 64(r1)
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; CHECK-BE-NEXT: lbz r3, 64(r1)
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; CHECK-BE-NEXT: ld r1, 0(r1)
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; CHECK-BE-NEXT: blr
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;
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; CHECK-32-LABEL: f6:
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; CHECK-32: # %bb.0: # %entry
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; CHECK-32-NEXT: mr r0, r1
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; CHECK-32-NEXT: stwu r0, -16(r1)
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; CHECK-32-NEXT: lis r12, 4
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; CHECK-32-NEXT: ori r12, r12, 0
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; CHECK-32-NEXT: mtctr r12
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; CHECK-32-NEXT: .LBB6_1: # %entry
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; CHECK-32-NEXT: #
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; CHECK-32-NEXT: stwu r0, -4096(r1)
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; CHECK-32-NEXT: bdnz .LBB6_1
|
|
; CHECK-32-NEXT: # %bb.2: # %entry
|
|
; CHECK-32-NEXT: sub r0, r1, r0
|
|
; CHECK-32-NEXT: li r3, 3
|
|
; CHECK-32-NEXT: sub r0, r1, r0
|
|
; CHECK-32-NEXT: stb r3, 16(r1)
|
|
; CHECK-32-NEXT: mr r0, r31
|
|
; CHECK-32-NEXT: lbz r3, 16(r1)
|
|
; CHECK-32-NEXT: lwz r31, 0(r1)
|
|
; CHECK-32-NEXT: mr r1, r31
|
|
; CHECK-32-NEXT: mr r31, r0
|
|
; CHECK-32-NEXT: blr
|
|
entry:
|
|
%a = alloca i8, i64 1073741824
|
|
%b = getelementptr inbounds i8, i8* %a, i64 63
|
|
store volatile i8 3, i8* %a
|
|
%c = load volatile i8, i8* %a
|
|
ret i8 %c
|
|
}
|
|
|
|
define i8 @f7() #0 "stack-probe-size"="65536" nounwind {
|
|
; CHECK-LE-LABEL: f7:
|
|
; CHECK-LE: # %bb.0: # %entry
|
|
; CHECK-LE-NEXT: lis r12, -1
|
|
; CHECK-LE-NEXT: mr r0, r1
|
|
; CHECK-LE-NEXT: ori r12, r12, 13776
|
|
; CHECK-LE-NEXT: stdux r0, r1, r12
|
|
; CHECK-LE-NEXT: li r12, 15258
|
|
; CHECK-LE-NEXT: mtctr r12
|
|
; CHECK-LE-NEXT: lis r12, -1
|
|
; CHECK-LE-NEXT: ori r12, r12, 0
|
|
; CHECK-LE-NEXT: .LBB7_1: # %entry
|
|
; CHECK-LE-NEXT: #
|
|
; CHECK-LE-NEXT: stdux r0, r1, r12
|
|
; CHECK-LE-NEXT: bdnz .LBB7_1
|
|
; CHECK-LE-NEXT: # %bb.2: # %entry
|
|
; CHECK-LE-NEXT: li r3, 3
|
|
; CHECK-LE-NEXT: stb r3, 41(r1)
|
|
; CHECK-LE-NEXT: lbz r3, 41(r1)
|
|
; CHECK-LE-NEXT: ld r1, 0(r1)
|
|
; CHECK-LE-NEXT: blr
|
|
;
|
|
; CHECK-BE-LABEL: f7:
|
|
; CHECK-BE: # %bb.0: # %entry
|
|
; CHECK-BE-NEXT: lis r12, -1
|
|
; CHECK-BE-NEXT: mr r0, r1
|
|
; CHECK-BE-NEXT: ori r12, r12, 13760
|
|
; CHECK-BE-NEXT: stdux r0, r1, r12
|
|
; CHECK-BE-NEXT: li r12, 15258
|
|
; CHECK-BE-NEXT: mtctr r12
|
|
; CHECK-BE-NEXT: lis r12, -1
|
|
; CHECK-BE-NEXT: ori r12, r12, 0
|
|
; CHECK-BE-NEXT: .LBB7_1: # %entry
|
|
; CHECK-BE-NEXT: #
|
|
; CHECK-BE-NEXT: stdux r0, r1, r12
|
|
; CHECK-BE-NEXT: bdnz .LBB7_1
|
|
; CHECK-BE-NEXT: # %bb.2: # %entry
|
|
; CHECK-BE-NEXT: li r3, 3
|
|
; CHECK-BE-NEXT: stb r3, 57(r1)
|
|
; CHECK-BE-NEXT: lbz r3, 57(r1)
|
|
; CHECK-BE-NEXT: ld r1, 0(r1)
|
|
; CHECK-BE-NEXT: blr
|
|
;
|
|
; CHECK-32-LABEL: f7:
|
|
; CHECK-32: # %bb.0: # %entry
|
|
; CHECK-32-NEXT: lis r12, -1
|
|
; CHECK-32-NEXT: mr r0, r1
|
|
; CHECK-32-NEXT: ori r12, r12, 13808
|
|
; CHECK-32-NEXT: stwux r0, r1, r12
|
|
; CHECK-32-NEXT: li r12, 15258
|
|
; CHECK-32-NEXT: mtctr r12
|
|
; CHECK-32-NEXT: lis r12, -1
|
|
; CHECK-32-NEXT: ori r12, r12, 0
|
|
; CHECK-32-NEXT: .LBB7_1: # %entry
|
|
; CHECK-32-NEXT: #
|
|
; CHECK-32-NEXT: stwux r0, r1, r12
|
|
; CHECK-32-NEXT: bdnz .LBB7_1
|
|
; CHECK-32-NEXT: # %bb.2: # %entry
|
|
; CHECK-32-NEXT: sub r0, r1, r0
|
|
; CHECK-32-NEXT: li r3, 3
|
|
; CHECK-32-NEXT: sub r0, r1, r0
|
|
; CHECK-32-NEXT: stb r3, 9(r1)
|
|
; CHECK-32-NEXT: mr r0, r31
|
|
; CHECK-32-NEXT: lbz r3, 9(r1)
|
|
; CHECK-32-NEXT: lwz r31, 0(r1)
|
|
; CHECK-32-NEXT: mr r1, r31
|
|
; CHECK-32-NEXT: mr r31, r0
|
|
; CHECK-32-NEXT: blr
|
|
entry:
|
|
%a = alloca i8, i64 1000000007
|
|
%b = getelementptr inbounds i8, i8* %a, i64 101
|
|
store volatile i8 3, i8* %a
|
|
%c = load volatile i8, i8* %a
|
|
ret i8 %c
|
|
}
|
|
|
|
attributes #0 = { "probe-stack"="inline-asm" }
|