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9cbffd73fc
This patch fixes passing long double type arguments to function in soft float mode. If there is less than 4 argument registers free (long double type is mapped in 4 gpr registers in soft float mode) long double type argument must be passed through stack. Differential Revision: https://reviews.llvm.org/D20114. llvm-svn: 277804
27 lines
951 B
LLVM
27 lines
951 B
LLVM
; RUN: llc -O2 -mtriple=powerpc-unknown-linux-gnu < %s | FileCheck %s
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target datalayout = "E-m:e-p:32:32-i64:64-n32"
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target triple = "powerpc-buildroot-linux-gnu"
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@x = global ppc_fp128 0xM3FF00000000000000000000000000000, align 16
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@.str = private unnamed_addr constant [9 x i8] c"%Lf %Lf\0A\00", align 1
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define void @foo() #0 {
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entry:
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%0 = load ppc_fp128, ppc_fp128* @x, align 16
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%call = tail call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i32 0, i32 0), ppc_fp128 %0, ppc_fp128 %0)
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ret void
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}
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; Do not put second argument of function in r8 register, because there is no enough registers
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; left for long double type (4 registers in soft float mode). Instead in r8 register this
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; argument put on stack.
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; CHECK-NOT: mr 8, 4
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; CHECK: stw 7, 20(1)
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; CHECK: stw 6, 16(1)
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; CHECK: stw 5, 12(1)
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; CHECK: stw 4, 8(1)
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declare i32 @printf(i8* nocapture readonly, ...)
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attributes #0 = { "use-soft-float"="true" }
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