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119c41482e
r282428 added the MipsOptimizePICCall as an opt-in pass that can be skipped when using the -opt-bisect-limit option. However, this pass is needed because it generates code that conforms to the o32 ABI specification by using the $t9 register for PIC calls with JALR instructions. This bug was exposed by the fact that skipFunction() also checks for the "optnone" attribute. This caused functions with that attribute to break the requirements of the o32 ABI. llvm-svn: 285305
106 lines
2.8 KiB
LLVM
106 lines
2.8 KiB
LLVM
; RUN: llc -march=mipsel -disable-mips-delay-filler -relocation-model=pic < %s | \
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; RUN: FileCheck %s -check-prefix=O32
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; RUN: llc -march=mipsel -mips-load-target-from-got=false \
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; RUN: -disable-mips-delay-filler -relocation-model=pic < %s | FileCheck %s -check-prefix=O32-LOADTGT
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@gd1 = common global double 0.000000e+00, align 8
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@gd2 = common global double 0.000000e+00, align 8
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; O32-LABEL: caller3:
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; O32-DAG: lw $25, %call16(callee3)
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; O32-DAG: move $gp
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; O32: jalr $25
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; O32-NOT: move $gp
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; O32: lw $25, %call16(callee3)
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; O32-NOT: move $gp
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; O32: jalr $25
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; O32-NOT: move $gp
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; O32: lw $25, %call16(callee3)
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; O32-NOT: move $gp
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; O32: jalr $25
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; O32-LOADTGT-LABEL: caller3:
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; O32-LOADTGT-DAG: lw $25, %call16(callee3)
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; O32-LOADTGT-DAG: move $gp
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; O32-LOADTGT: jalr $25
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; O32-LOADTGT-NOT: move $gp
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; O32-LOADTGT: move $25
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; O32-LOADTGT-NOT: move $gp
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; O32-LOADTGT: jalr $25
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; O32-LOADTGT-NOT: move $gp
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; O32-LOADTGT: move $25
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; O32-LOADTGT-NOT: move $gp
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; O32-LOADTGT: jalr $25
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define void @caller3(i32 %n) {
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entry:
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tail call void @callee3()
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tail call void @callee3()
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%tobool1 = icmp eq i32 %n, 0
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br i1 %tobool1, label %while.end, label %while.body
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while.body:
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%n.addr.02 = phi i32 [ %dec, %while.body ], [ %n, %entry ]
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%dec = add nsw i32 %n.addr.02, -1
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tail call void @callee3()
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%tobool = icmp eq i32 %dec, 0
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br i1 %tobool, label %while.end, label %while.body
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while.end:
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ret void
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}
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declare void @callee3()
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; O32-LABEL: caller4:
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; O32-DAG: lw $25, %call16(ceil)
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; O32-DAG: move $gp
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; O32: jalr $25
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; O32-NOT: move $gp
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; O32: lw $25, %call16(ceil)
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; O32-NOT: move $gp
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; O32: jalr $25
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; O32-NOT: move $gp
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; O32: lw $25, %call16(ceil)
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; O32-NOT: move $gp
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; O32: jalr $25
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; O32-LOADTGT-LABEL: caller4:
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; O32-LOADTGT-DAG: lw $25, %call16(ceil)
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; O32-LOADTGT-DAG: move $gp
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; O32-LOADTGT: jalr $25
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; O32-LOADTGT-NOT: move $gp
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; O32-LOADTGT: move $25
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; O32-LOADTGT-NOT: move $gp
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; O32-LOADTGT: jalr $25
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; O32-LOADTGT-NOT: move $gp
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; O32-LOADTGT: move $25
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; O32-LOADTGT-NOT: move $gp
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; O32-LOADTGT: jalr $25
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define void @caller4(double %d) {
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entry:
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%call = tail call double @ceil(double %d)
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%call1 = tail call double @ceil(double %call)
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store double %call1, double* @gd2, align 8
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%call2 = tail call double @ceil(double %call1)
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store double %call2, double* @gd1, align 8
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ret void
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}
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declare double @ceil(double)
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; Make sure that the MipsOptimizePICCall pass is run even for optnone functions,
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; as we have to make sure that jalr uses $t9 for PIC code in order to adhere to
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; the MIPS o32 ABI.
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define hidden double @foo(double %dbl) #0 {
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entry:
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; O32: jalr $25
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%res = call double @sqrt(double %dbl)
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ret double %res
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}
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declare double @sqrt(double)
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attributes #0 = { noinline optnone }
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