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f3163dc461
This adds support for the MCU psABI in a way different from r251223 and r251224, basically reverting most of these two patches. The problem with the approach taken in r251223/4 is that it only handled libcalls that originated from the backend. However, the mid-end also inserts quite a few libcalls and assumes these use the platform's default calling convention. The previous patch tried to insert inregs when necessary both in the FE and, somewhat hackily, in the CG. Instead, we now define a new default calling convention for the MCU, which doesn't use inreg marking at all, similarly to what x86-64 does. Differential Revision: http://reviews.llvm.org/D15055 llvm-svn: 256495
70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
// RUN: %clang_cc1 -w -triple i386-pc-elfiamcu -mfloat-abi soft -emit-llvm -o - %s | FileCheck %s
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// CHECK-LABEL: define void @ints(i32 %a, i32 %b, i32 %c, i32 %d)
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void ints(int a, int b, int c, int d) {}
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// CHECK-LABEL: define void @floats(float %a, float %b, float %c, float %d)
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void floats(float a, float b, float c, float d) {}
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// CHECK-LABEL: define void @mixed(i32 %a, float %b, i32 %c, float %d)
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void mixed(int a, float b, int c, float d) {}
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// CHECK-LABEL: define void @doubles(double %d1, double %d2)
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void doubles(double d1, double d2) {}
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// CHECK-LABEL: define void @mixedDoubles(i32 %a, double %d1)
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void mixedDoubles(int a, double d1) {}
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typedef struct st3_t {
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char a[3];
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} st3_t;
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typedef struct st4_t {
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int a;
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} st4_t;
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typedef struct st5_t {
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int a;
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char b;
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} st5_t;
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typedef struct st12_t {
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int a;
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int b;
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int c;
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} st12_t;
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// CHECK-LABEL: define void @smallStructs(i32 %st1.coerce, i32 %st2.coerce, i32 %st3.coerce)
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void smallStructs(st4_t st1, st4_t st2, st4_t st3) {}
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// CHECK-LABEL: define void @paddedStruct(i32 %i1, i32 %st.coerce0, i32 %st.coerce1, i32 %st4.0)
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void paddedStruct(int i1, st5_t st, st4_t st4) {}
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// CHECK-LABEL: define void @largeStructBegin(%struct.st12_t* byval align 4 %st)
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void largeStructBegin(st12_t st) {}
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// CHECK-LABEL: define void @largeStructMiddle(i32 %i1, %struct.st12_t* byval align 4 %st, i32 %i2, i32 %i3)
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void largeStructMiddle(int i1, st12_t st, int i2, int i3) {}
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// CHECK-LABEL: define void @largeStructEnd(i32 %i1, i32 %i2, i32 %i3, i32 %st.0, i32 %st.1, i32 %st.2)
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void largeStructEnd(int i1, int i2, int i3, st12_t st) {}
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// CHECK-LABEL: define i24 @retNonPow2Struct(i32 %r.coerce)
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st3_t retNonPow2Struct(st3_t r) { return r; }
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// CHECK-LABEL: define i32 @retSmallStruct(i32 %r.coerce)
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st4_t retSmallStruct(st4_t r) { return r; }
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// CHECK-LABEL: define i64 @retPaddedStruct(i32 %r.coerce0, i32 %r.coerce1)
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st5_t retPaddedStruct(st5_t r) { return r; }
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// CHECK-LABEL: define void @retLargeStruct(%struct.st12_t* noalias sret %agg.result, i32 %i1, %struct.st12_t* byval align 4 %r)
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st12_t retLargeStruct(int i1, st12_t r) { return r; }
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// CHECK-LABEL: define i32 @varArgs(i32 %i1, ...)
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int varArgs(int i1, ...) { return i1; }
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// CHECK-LABEL: define double @longDoubleArg(double %ld1)
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long double longDoubleArg(long double ld1) { return ld1; }
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