derek.holloway
7502bf64a4
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92 lines
2.3 KiB
LLVM
92 lines
2.3 KiB
LLVM
; RUN: opt -S -passes=mergefunc < %s | FileCheck %s
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; These two functions are identical. The basic block labels are the same, and
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; induce the same CFG. We are testing that block addresses within different
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; functions are compared by their value, and not based on order. Both functions
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; come from the same C-code, but in the first the two val_0/val_1 basic blocks
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; are in a different order (they were manually switched post-compilation).
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define i32 @_Z1fi(i32 %i) #0 {
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entry:
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%i.addr = alloca i32, align 4
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%ret = alloca i32, align 4
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%l = alloca ptr, align 8
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store i32 %i, ptr %i.addr, align 4
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store i32 0, ptr %ret, align 4
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store ptr blockaddress(@_Z1fi, %val_0), ptr %l, align 8
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%0 = load i32, ptr %i.addr, align 4
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%and = and i32 %0, 256
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%cmp = icmp eq i32 %and, 0
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br i1 %cmp, label %if.then, label %if.end
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if.then:
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store ptr blockaddress(@_Z1fi, %val_1), ptr %l, align 8
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br label %if.end
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if.end:
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%1 = load ptr, ptr %l, align 8
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br label %indirectgoto
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val_1:
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store i32 42, ptr %ret, align 4
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br label %end
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val_0:
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store i32 12, ptr %ret, align 4
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br label %end
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end:
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%2 = load i32, ptr %ret, align 4
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ret i32 %2
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indirectgoto:
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%indirect.goto.dest = phi ptr [ %1, %if.end ]
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indirectbr ptr %indirect.goto.dest, [label %val_0, label %val_1]
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}
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define i32 @_Z1gi(i32 %i) #0 {
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; CHECK-LABEL: define i32 @_Z1gi
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; CHECK-NEXT: tail call i32 @_Z1fi
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; CHECK-NEXT: ret
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entry:
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%i.addr = alloca i32, align 4
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%ret = alloca i32, align 4
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%l = alloca ptr, align 8
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store i32 %i, ptr %i.addr, align 4
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store i32 0, ptr %ret, align 4
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store ptr blockaddress(@_Z1gi, %val_0), ptr %l, align 8
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%0 = load i32, ptr %i.addr, align 4
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%and = and i32 %0, 256
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%cmp = icmp eq i32 %and, 0
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br i1 %cmp, label %if.then, label %if.end
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if.then:
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store ptr blockaddress(@_Z1gi, %val_1), ptr %l, align 8
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br label %if.end
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if.end:
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%1 = load ptr, ptr %l, align 8
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br label %indirectgoto
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val_0:
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store i32 12, ptr %ret, align 4
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br label %end
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val_1:
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store i32 42, ptr %ret, align 4
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br label %end
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end:
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%2 = load i32, ptr %ret, align 4
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ret i32 %2
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indirectgoto:
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%indirect.goto.dest = phi ptr [ %1, %if.end ]
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indirectbr ptr %indirect.goto.dest, [label %val_0, label %val_1]
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}
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