50 lines
1.5 KiB
LLVM
50 lines
1.5 KiB
LLVM
; RUN: opt -inline %s -S | FileCheck %s
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
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target triple = "thumbv7m-arm-none-eabi"
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; Check we don't inline loops at -Oz. They tend to be larger than we
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; expect.
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; CHECK: define i8* @H
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@digits = constant [16 x i8] c"0123456789ABCDEF", align 1
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define i8* @H(i8* %p, i32 %val, i32 %num) #0 {
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entry:
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br label %do.body
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do.body: ; preds = %do.body, %entry
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%p.addr.0 = phi i8* [ %p, %entry ], [ %incdec.ptr, %do.body ]
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%val.addr.0 = phi i32 [ %val, %entry ], [ %shl, %do.body ]
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%num.addr.0 = phi i32 [ %num, %entry ], [ %dec, %do.body ]
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%shr = lshr i32 %val.addr.0, 28
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%arrayidx = getelementptr inbounds [16 x i8], [16 x i8]* @digits, i32 0, i32 %shr
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%0 = load i8, i8* %arrayidx, align 1
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%incdec.ptr = getelementptr inbounds i8, i8* %p.addr.0, i32 1
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store i8 %0, i8* %p.addr.0, align 1
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%shl = shl i32 %val.addr.0, 4
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%dec = add i32 %num.addr.0, -1
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%tobool = icmp eq i32 %dec, 0
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br i1 %tobool, label %do.end, label %do.body
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do.end: ; preds = %do.body
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%scevgep = getelementptr i8, i8* %p, i32 %num
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ret i8* %scevgep
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}
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define nonnull i8* @call1(i8* %p, i32 %val, i32 %num) #0 {
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entry:
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; CHECK: tail call i8* @H
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%call = tail call i8* @H(i8* %p, i32 %val, i32 %num) #0
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ret i8* %call
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}
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define nonnull i8* @call2(i8* %p, i32 %val) #0 {
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entry:
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; CHECK: tail call i8* @H
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%call = tail call i8* @H(i8* %p, i32 %val, i32 32) #0
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ret i8* %call
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}
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attributes #0 = { minsize optsize }
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