5e0be962fe
https://reviews.llvm.org/D111433 introduced PPCISD::CALL_RM for -frounding-math. -msecure-plt -frounding-math {-fpic,-fPIC} codegen for PPC32 became incorrect when a function contains function calls but no global variable references (GlobalBaseReg). As reported by @q66 , musl/src/dirent/closedir.c implements such a function, which is miscompiled. PPCISD::CALL has custom logic to set up the base register (https://reviews.llvm.org/D42112). Add an extra case for CALL_RM. While here, improve the test to * actually test `case PPCISD::CALL`: we need a non-leaf function that doesn't access global variables (global variables lead to GlobalBaseReg, which call `getGlobalBaseReg()` as well). * test `ExternalSymbolSDNode` with a memset. Supersedes: #72758 Pull Request: https://github.com/llvm/llvm-project/pull/121281
108 lines
3.9 KiB
LLVM
108 lines
3.9 KiB
LLVM
; RUN: llc < %s -mtriple=powerpc-unknown-linux-gnu -relocation-model=pic | FileCheck --check-prefixes=LARGE,LARGE-BSS %s
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; RUN: llc < %s -mtriple=powerpc-unknown-linux-gnu -mattr=+secure-plt -relocation-model=pic | FileCheck --check-prefixes=LARGE,LARGE-SECUREPLT %s
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; RUN: llc < %s -mtriple=powerpc-unknown-netbsd -mattr=+secure-plt -relocation-model=pic | FileCheck -check-prefix=LARGE-SECUREPLT %s
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; RUN: llc < %s -mtriple=powerpc-unknown-netbsd -relocation-model=pic | FileCheck -check-prefix=LARGE-SECUREPLT %s
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; RUN: llc < %s -mtriple=powerpc-unknown-openbsd -mattr=+secure-plt -relocation-model=pic | FileCheck -check-prefix=LARGE-SECUREPLT %s
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; RUN: llc < %s -mtriple=powerpc-unknown-openbsd -relocation-model=pic | FileCheck -check-prefix=LARGE-SECUREPLT %s
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; RUN: llc < %s -mtriple=powerpc-linux-musl -mattr=+secure-plt -relocation-model=pic | FileCheck -check-prefix=LARGE-SECUREPLT %s
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; RUN: llc < %s -mtriple=powerpc-linux-musl -relocation-model=pic | FileCheck -check-prefix=LARGE-SECUREPLT %s
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$bar1 = comdat any
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@bar = common global i32 0, align 4
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@bar1 = global i32 0, align 4, comdat($bar1)
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@bar2 = global i32 0, align 4, comdat($bar1)
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declare i32 @call_foo(i32, ...)
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declare i32 @call_strictfp() strictfp
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declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg)
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define i32 @foo() {
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entry:
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%0 = load i32, ptr @bar, align 4
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%call = call i32 (i32, ...) @call_foo(i32 %0, i32 0, i32 1, i32 2, i32 4, i32 8, i32 16, i32 32, i32 64)
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ret i32 %0
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}
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define i32 @foo1() strictfp {
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entry:
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%call = call i32 (i32, ...) @call_foo(i32 0)
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ret i32 %call
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}
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define i32 @foo1_strictfp() strictfp {
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entry:
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%call = call i32 () @call_strictfp()
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ret i32 %call
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}
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define void @foo2(ptr %a) {
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call void @llvm.memset.p0.i64(ptr align 1 %a, i8 1, i64 1000, i1 false)
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ret void
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}
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define i32 @load() {
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entry:
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%0 = load i32, ptr @bar1
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%1 = load i32, ptr @bar2
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%2 = add i32 %0, %1
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ret i32 %2
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}
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!llvm.module.flags = !{!0}
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!0 = !{i32 1, !"PIC Level", i32 2}
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; LARGE-BSS: [[POFF:\.L[0-9]+\$poff]]:
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; LARGE-BSS-NEXT: .long .LTOC-[[PB:\.L[0-9]+\$pb]]
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; LARGE-BSS-NEXT: foo:
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; LARGE-BSS: stwu 1, -32(1)
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; LARGE-BSS: stw 30, 24(1)
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; LARGE-BSS: bl [[PB]]
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; LARGE-BSS-NEXT: [[PB]]:
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; LARGE-BSS: mflr 30
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; LARGE-BSS: lwz [[REG:[0-9]+]], [[POFF]]-[[PB]](30)
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; LARGE-BSS-NEXT: add 30, [[REG]], 30
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; LARGE-BSS-DAG: lwz [[VREG:[0-9]+]], [[VREF:\.LC[0-9]+]]-.LTOC(30)
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; LARGE-BSS-DAG: lwz {{[0-9]+}}, 0([[VREG]])
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; LARGE-BSS-DAG: stw {{[0-9]+}}, 8(1)
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; LARGE-BSS: lwz 30, 24(1)
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; LARGE-SECUREPLT: addis 30, 30, .LTOC-.L0$pb@ha
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; LARGE-SECUREPLT: addi 30, 30, .LTOC-.L0$pb@l
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; LARGE-SECUREPLT: bl call_foo@PLT+32768
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; LARGE-SECUREPLT-LABEL: foo1:
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; LARGE-SECUREPLT: .L1$pb:
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; LARGE-SECUREPLT-NEXT: crxor 6, 6, 6
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; LARGE-SECUREPLT-NEXT: mflr 30
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; LARGE-SECUREPLT-NEXT: addis 30, 30, .LTOC-.L1$pb@ha
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; LARGE-SECUREPLT-NEXT: addi 30, 30, .LTOC-.L1$pb@l
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; LARGE-SECUREPLT-NEXT: li 3, 0
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; LARGE-SECUREPLT-NEXT: bl call_foo@PLT+32768
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; LARGE-SECUREPLT-LABEL: foo1_strictfp:
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; LARGE-SECUREPLT: .L2$pb:
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; LARGE-SECUREPLT-NEXT: mflr 30
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; LARGE-SECUREPLT-NEXT: addis 30, 30, .LTOC-.L2$pb@ha
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; LARGE-SECUREPLT-NEXT: addi 30, 30, .LTOC-.L2$pb@l
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; LARGE-SECUREPLT-NEXT: bl call_strictfp@PLT+32768
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; LARGE-SECUREPLT-LABEL: foo2:
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; LARGE-SECUREPLT: .L3$pb:
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; LARGE-SECUREPLT: mflr 30
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; LARGE-SECUREPLT-NEXT: addis 30, 30, .LTOC-.L3$pb@ha
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; LARGE-SECUREPLT-NEXT: addi 30, 30, .LTOC-.L3$pb@l
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; LARGE-SECUREPLT: bl memset@PLT+32768
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; LARGE-SECUREPLT-LABEEL: load:
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; LARGE: .section .bss.bar1,"awG",@nobits,bar1,comdat
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; LARGE: bar1:
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; LARGE: .section .bss.bar2,"awG",@nobits,bar1,comdat
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; LARGE: bar2:
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; LARGE: .section .got2,"aw",@progbits
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; LARGE-NEXT: .p2align 2
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; LARGE-NEXT: .LC0:
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; LARGE-NEXT: .long bar
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; LARGE-NEXT: .LC1:
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; LARGE-NEXT: .long bar1
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; LARGE-NEXT: .LC2:
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; LARGE-NEXT: .long bar2
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