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AMDGPU: Stop adding stack passed wide arguments to call conv handler

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The generated calling convention code shouldn't see these types since
we split large types into 32-bit chunks before the calling convention
code is triggered.

GlobalISel ends up directly calls the generated CC code before
checking for the register count breakdown. Arguably this difference is
a bug, but this was dead code for the DAG anyway.
This commit is contained in:
Matt Arsenault 2021-02-07 12:12:09 -05:00
parent eafec2b15a
commit 1a9e13e36a
1 changed files with 3 additions and 21 deletions
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24
lib/Target/AMDGPU/AMDGPUCallingConv.td
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@ -34,13 +34,7 @@ def CC_SI_Gfx : CallingConv<[
VGPR24, VGPR25, VGPR26, VGPR27, VGPR28, VGPR29, VGPR30, VGPR31
]>>>,
CCIfType<[i32, f32, v2i16, v2f16, i16, f16, i1], CCAssignToStack<4, 4>>,
CCIfType<[i64, f64, v2i32, v2f32], CCAssignToStack<8, 4>>,
CCIfType<[v3i32, v3f32], CCAssignToStack<12, 4>>,
CCIfType<[v4i32, v4f32, v2i64, v2f64], CCAssignToStack<16, 4>>,
CCIfType<[v5i32, v5f32], CCAssignToStack<20, 4>>,
CCIfType<[v8i32, v8f32], CCAssignToStack<32, 4>>,
CCIfType<[v16i32, v16f32], CCAssignToStack<64, 4>>
CCIfType<[i32, f32, v2i16, v2f16, i16, f16, i1], CCAssignToStack<4, 4>>
]>;
def RetCC_SI_Gfx : CallingConv<[
@ -75,13 +69,7 @@ def RetCC_SI_Gfx : CallingConv<[
VGPR128, VGPR129, VGPR130, VGPR131, VGPR132, VGPR133, VGPR134, VGPR135
]>>>,
CCIfType<[i32, f32, v2i16, v2f16, i16, f16, i1], CCAssignToStack<4, 4>>,
CCIfType<[i64, f64, v2i32, v2f32], CCAssignToStack<8, 4>>,
CCIfType<[v3i32, v3f32], CCAssignToStack<12, 4>>,
CCIfType<[v4i32, v4f32, v2i64, v2f64], CCAssignToStack<16, 4>>,
CCIfType<[v5i32, v5f32], CCAssignToStack<20, 4>>,
CCIfType<[v8i32, v8f32], CCAssignToStack<32, 4>>,
CCIfType<[v16i32, v16f32], CCAssignToStack<64, 4>>
CCIfType<[i32, f32, v2i16, v2f16, i16, f16, i1], CCAssignToStack<4, 4>>
]>;
def CC_SI_SHADER : CallingConv<[
@ -205,13 +193,7 @@ def CC_AMDGPU_Func : CallingConv<[
VGPR8, VGPR9, VGPR10, VGPR11, VGPR12, VGPR13, VGPR14, VGPR15,
VGPR16, VGPR17, VGPR18, VGPR19, VGPR20, VGPR21, VGPR22, VGPR23,
VGPR24, VGPR25, VGPR26, VGPR27, VGPR28, VGPR29, VGPR30, VGPR31]>>,
CCIfType<[i32, f32, v2i16, v2f16, i16, f16, i1], CCAssignToStack<4, 4>>,
CCIfType<[i64, f64, v2i32, v2f32], CCAssignToStack<8, 4>>,
CCIfType<[v3i32, v3f32], CCAssignToStack<12, 4>>,
CCIfType<[v4i32, v4f32, v2i64, v2f64], CCAssignToStack<16, 4>>,
CCIfType<[v5i32, v5f32], CCAssignToStack<20, 4>>,
CCIfType<[v8i32, v8f32], CCAssignToStack<32, 4>>,
CCIfType<[v16i32, v16f32], CCAssignToStack<64, 4>>
CCIfType<[i32, f32, v2i16, v2f16, i16, f16, i1], CCAssignToStack<4, 4>>
]>;
// Calling convention for leaf functions