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01d013ec04
ELF subtarget. The existing logic is used as a fallback to avoid any changes to the Darwin ABI. PPC64 ELF now has two possible data layout strings: one for FreeBSD, which requires 8-byte alignment, and a default string that requires 16-byte alignment. I've added a test for PPC64 Linux to verify the 16-byte alignment. If somebody wants to add a separate test for FreeBSD, that would be great. Note that there is a companion patch to update the alignment information in Clang, which I am committing now as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166928 91177308-0d34-0410-b5e6-96231b3b80d8
27 lines
854 B
LLVM
27 lines
854 B
LLVM
; RUN: llc -mcpu=pwr7 -O0 < %s | FileCheck %s
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; Verify internal alignment of long double in a struct. The double
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; argument comes in in GPR3; GPR4 is skipped; GPRs 5 and 6 contain
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; the long double. Check that these are stored to proper locations
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; in the parameter save area and loaded from there for return in FPR1/2.
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target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
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target triple = "powerpc64-unknown-linux-gnu"
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%struct.S = type { double, ppc_fp128 }
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define ppc_fp128 @test(%struct.S* byval %x) nounwind {
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entry:
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%b = getelementptr inbounds %struct.S* %x, i32 0, i32 1
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%0 = load ppc_fp128* %b, align 16
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ret ppc_fp128 %0
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}
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; CHECK: std 6, 72(1)
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; CHECK: std 5, 64(1)
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; CHECK: std 4, 56(1)
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; CHECK: std 3, 48(1)
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; CHECK: lfd 1, 64(1)
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; CHECK: lfd 2, 72(1)
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