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c06e5cf2e3
This pass was assuming that if hasAddressTaken() returns false for a function, the function's only uses are call sites. That's not true because there can be references by BlockAddresses too. Fix the pass to handle this case. Fix BlockAddress::replaceUsesOfWithOnConstant() to allow a function's type to be changed by RAUW'ing the function with a bitcast of the recreated function. Patch by Mark Seaborn. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183933 91177308-0d34-0410-b5e6-96231b3b80d8
26 lines
664 B
LLVM
26 lines
664 B
LLVM
; RUN: opt %s -deadargelim -S | FileCheck %s
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@block_addr = global i8* blockaddress(@varargs_func, %l1)
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; CHECK: @block_addr = global i8* blockaddress(@varargs_func, %l1)
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; This function is referenced by a "blockaddress" constant but it is
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; not address-taken, so the pass should be able to remove its unused
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; varargs.
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define internal i32 @varargs_func(i8* %addr, ...) {
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indirectbr i8* %addr, [ label %l1, label %l2 ]
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l1:
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ret i32 1
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l2:
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ret i32 2
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}
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; CHECK: define internal i32 @varargs_func(i8* %addr) {
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define i32 @caller(i8* %addr) {
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%r = call i32 (i8*, ...)* @varargs_func(i8* %addr)
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ret i32 %r
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}
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; CHECK: %r = call i32 @varargs_func(i8* %addr)
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