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For historic reasons, the behavior of .align differs between targets. Fortunately, there are alternatives, .p2align and .balign, which make the interpretation of the parameter explicit, and which behave consistently across targets. This patch teaches MC to use .p2align instead of .align, so that people reading code for multiple architectures don't have to remember which way each platform does its .align directive. Differential Revision: http://reviews.llvm.org/D16549 llvm-svn: 258750
28 lines
1.4 KiB
LLVM
28 lines
1.4 KiB
LLVM
; RUN: llc < %s -mtriple thumbv7-apple-ios -O1 | FileCheck %s
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; rdar://15144402
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; Make sure we don't assume 4-byte alignment when loading from a byval argument
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; with alignment of 2.
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; CHECK: ldr r1, [r[[REG:[0-9]+]]]
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; CHECK: ldr r2, [r[[REG]], #4]
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; CHECK: ldr r3, [r[[REG]], #8]
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; CHECK-NOT: ldm
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; CHECK: .p2align 1 @ @sID
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%struct.ModuleID = type { [32 x i8], [32 x i8], i16 }
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@sID = internal constant %struct.ModuleID { [32 x i8] c"TEST\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00", [32 x i8] c"1.0\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00", i16 23 }, align 2
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; Function Attrs: nounwind ssp
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define void @Client() #0 {
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entry:
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tail call void @Logger(i8 signext 97, %struct.ModuleID* byval @sID) #2
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ret void
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}
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declare void @Logger(i8 signext, %struct.ModuleID* byval) #1
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attributes #0 = { nounwind ssp "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind }
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