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Merge pull request #1520 from bjorn3/aarch64-lower-small-fcvt_from_int

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Lower fcvt_from_{u,s}int for 8 and 16 bit ints
This commit is contained in:
Chris Fallin
2020-08-20 11:35:06 -07:00
committed by GitHub
parent 693c6ea771 3a16416132
commit 775dfa9df2
2 changed files with 168 additions and 10 deletions
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134
cranelift/filetests/filetests/vcode/aarch64/fcvt-small.clif Normal file
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@@ -0,0 +1,134 @@
test compile
target aarch64
function u0:0(i8) -> f32 {
block0(v0: i8):
; check: stp fp, lr, [sp, #-16]!
; check: mov fp, sp
v1 = fcvt_from_uint.f32 v0
; check: uxtb w0, w0
; check: ucvtf s0, w0
return v1
; check: mov sp, fp
; check: ldp fp, lr, [sp], #16
; check: ret
}
function u0:0(i8) -> f64 {
block0(v0: i8):
; check: stp fp, lr, [sp, #-16]!
; check: mov fp, sp
v1 = fcvt_from_uint.f64 v0
; check: uxtb w0, w0
; check: ucvtf d0, w0
return v1
; check: mov sp, fp
; check: ldp fp, lr, [sp], #16
; check: ret
}
function u0:0(i16) -> f32 {
block0(v0: i16):
; check: stp fp, lr, [sp, #-16]!
; check: mov fp, sp
v1 = fcvt_from_uint.f32 v0
; check: uxth w0, w0
; check: ucvtf s0, w0
return v1
; check: mov sp, fp
; check: ldp fp, lr, [sp], #16
; check: ret
}
function u0:0(i16) -> f64 {
block0(v0: i16):
; check: stp fp, lr, [sp, #-16]!
; check: mov fp, sp
v1 = fcvt_from_uint.f64 v0
; check: uxth w0, w0
; check: ucvtf d0, w0
return v1
; check: mov sp, fp
; check: ldp fp, lr, [sp], #16
; check: ret
}
function u0:0(f32) -> i8 {
block0(v0: f32):
; check: stp fp, lr, [sp, #-16]!
; check: mov fp, sp
v1 = fcvt_to_uint.i8 v0
; check: fcmp s0, s0
; check: b.vc 8 ; udf
; check: ldr s1, pc+8 ; b 8 ; data.f32 -1
; check: fcmp s0, s1
; check: b.gt 8 ; udf
; check: ldr s1, pc+8 ; b 8 ; data.f32 256
; check: fcmp s0, s1
; check: b.mi 8 ; udf
; check: fcvtzu w0, s0
return v1
; check: mov sp, fp
; check: ldp fp, lr, [sp], #16
; check: ret
}
function u0:0(f64) -> i8 {
block0(v0: f64):
; check: stp fp, lr, [sp, #-16]!
; check: mov fp, sp
v1 = fcvt_to_uint.i8 v0
; check: fcmp d0, d0
; check: b.vc 8 ; udf
; check: ldr d1, pc+8 ; b 12 ; data.f64 -1
; check: fcmp d0, d1
; check: b.gt 8 ; udf
; check: ldr d1, pc+8 ; b 12 ; data.f64 256
; check: fcmp d0, d1
; check: b.mi 8 ; udf
; check: fcvtzu w0, d0
return v1
; check: mov sp, fp
; check: ldp fp, lr, [sp], #16
; check: ret
}
function u0:0(f32) -> i16 {
block0(v0: f32):
; check: stp fp, lr, [sp, #-16]!
; check: mov fp, sp
v1 = fcvt_to_uint.i16 v0
; check: fcmp s0, s0
; check: b.vc 8 ; udf
; check: ldr s1, pc+8 ; b 8 ; data.f32 -1
; check: fcmp s0, s1
; check: b.gt 8 ; udf
; check: ldr s1, pc+8 ; b 8 ; data.f32 65536
; check: fcmp s0, s1
; check: b.mi 8 ; udf
; check: fcvtzu w0, s0
return v1
; check: mov sp, fp
; check: ldp fp, lr, [sp], #16
; check: ret
}
function u0:0(f64) -> i16 {
block0(v0: f64):
; check: stp fp, lr, [sp, #-16]!
; check: mov fp, sp
v1 = fcvt_to_uint.i16 v0
; check: fcmp d0, d0
; check: b.vc 8 ; udf
; check: ldr d1, pc+8 ; b 12 ; data.f64 -1
; check: fcmp d0, d1
; check: b.gt 8 ; udf
; check: ldr d1, pc+8 ; b 12 ; data.f64 65536
; check: fcmp d0, d1
; check: b.mi 8 ; udf
; check: fcvtzu w0, d0
return v1
; check: mov sp, fp
; check: ldp fp, lr, [sp], #16
; check: ret
}