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729379a1e1
Move the logic for determining the `wchar_t` type information into the
driver. Rather than passing the single bit of information of
`-fshort-wchar` indicate to the frontend the desired type of `wchar_t`
through a new `-cc1` option of `-fwchar-type` and indicate the
signedness through `-f{,no-}signed-wchar`. This replicates the current
logic which was spread throughout Basic into the
`RenderCharacterOptions`.
Most of the changes to the tests are to ensure that the frontend uses
the correct type. Add a new test set under `test/Driver/wchar_t.c` to
ensure that we calculate the proper types for the various cases.
llvm-svn: 315126
42 lines
954 B
C
42 lines
954 B
C
// RUN: %clang_cc1 -emit-llvm -o - %s -fpascal-strings -fwchar-type=short -fno-signed-wchar | FileCheck %s
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// rdar://8020384
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#include <stddef.h>
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extern void abort (void);
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typedef unsigned short UInt16;
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typedef UInt16 UniChar;
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int main(int argc, char* argv[])
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{
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char st[] = "\pfoo"; // pascal string
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UniChar wt[] = L"\pbar"; // pascal Unicode string
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UniChar wt1[] = L"\p";
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UniChar wt2[] = L"\pgorf";
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if (st[0] != 3)
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abort ();
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if (wt[0] != 3)
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abort ();
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if (wt1[0] != 0)
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abort ();
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if (wt2[0] != 4)
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abort ();
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return 0;
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}
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// CHECK: [i16 3, i16 98, i16 97, i16 114, i16 0]
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// CHECK: [i16 4, i16 103, i16 111, i16 114, i16 102, i16 0]
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// PR8856 - -fshort-wchar makes wchar_t be unsigned.
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// CHECK: @test2
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// CHECK: store volatile i32 1, i32* %isUnsigned
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void test2() {
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volatile int isUnsigned = (wchar_t)-1 > (wchar_t)0;
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}
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