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Add saving and restoring of r30 to the prologue and epilogue, respectively

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Summary: The PIC additions didn't update the prologue and epilogue code to save and restore r30 (PIC base register).  This does that.

Test Plan: Tests updated.

Reviewers: hfinkel

Reviewed By: hfinkel

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D6876

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225450 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Justin Hibbits
2015-01-08 15:47:19 +00:00
parent f5aa68179c
commit 77e85a150c
4 changed files with 23 additions and 2 deletions
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4
test/CodeGen/PowerPC/ppc32-pic-large.ll
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@@ -12,12 +12,14 @@ entry:
; LARGE-BSS: [[POFF:\.L[0-9]+\$poff]]:
; LARGE-BSS-NEXT: .long .LTOC-[[PB:\.L[0-9]+\$pb]]
; LARGE-BSS-NEXT: foo:
; LARGE-BSS: stw 30, -8(1)
; LARGE-BSS: bl [[PB]]
; LARGE-BSS-NEXT: [[PB]]:
; LARGE-BSS: mflr 30
; LARGE-BSS: lwz [[REG:[0-9]+]], [[POFF]]-[[PB]](30)
; LARGE-BSS-NEXT: add 30, [[REG]], 30
; LARGE-BSS: lwz [[VREG:[0-9]+]], [[VREF:\.LC[0-9]+]]-.LTOC(30)
; LARGE-BSS: lwz {{[0-9]+}}, 0([[VREG]])
; LARGE-BSS-DAG: lwz {{[0-9]+}}, 0([[VREG]])
; LARGE-BSS-DAG: lwz 30, -8(1)
; LARGE-BSS: [[VREF]]:
; LARGE-BSS-NEXT: .long bar

4
test/CodeGen/PowerPC/ppc32-pic.ll
View File

@@ -10,7 +10,9 @@ entry:
!llvm.module.flags = !{!0}
!0 = !{i32 1, !"PIC Level", i32 1}
; SMALL-BSS-LABEL:foo:
; SMALL-BSS: stw 30, -8(1)
; SMALL-BSS: bl _GLOBAL_OFFSET_TABLE_@local-4
; SMALL-BSS: mflr 30
; SMALL-BSS: lwz [[VREG:[0-9]+]], bar@GOT(30)
; SMALL-BSS: lwz {{[0-9]+}}, 0([[VREG]])
; SMALL-BSS-DAG: lwz {{[0-9]+}}, 0([[VREG]])
; SMALL-BSS-DAG: lwz 30, -8(1)