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85e349fd2c
The frontend option -fno-optimize-sibling-calls resolves to -cc1's -mdisable-tail-calls, which is passed to the TargetMachine in the backend. PassManagerBuilder was adding the -tailcallelim pass anyway. Use a new DisableTailCalls option in PassManagerBuilder to disable tail calls harder. Requires the matching commit in LLVM that adds DisableTailCalls. <rdar://problem/16050591> llvm-svn: 206543
17 lines
399 B
C
17 lines
399 B
C
// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9.0 -emit-llvm -O1 -mdisable-tail-calls -o - < %s | FileCheck %s
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typedef struct List {
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struct List *next;
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int data;
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} List;
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// CHECK-LABEL: define %struct.List* @find
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List *find(List *head, int data) {
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if (!head)
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return 0;
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if (head->data == data)
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return head;
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// CHECK: call %struct.List* @find
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return find(head->next, data);
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}
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