0fed78e063
If the block which would be a preheader for a loop has other successors, don't hoist instructions into it. Instead create a dedicated preheader.
43 lines
973 B
Plaintext
43 lines
973 B
Plaintext
test licm
|
|
target riscv32
|
|
|
|
; The loop in this function is entered from a critical edge.
|
|
|
|
function %critical_edge(i32, i32) -> i32 {
|
|
|
|
ebb0(v0: i32, v7: i32):
|
|
[SBzero#38] brnz v7, ebb1(v0)
|
|
[Iret#19] return v0
|
|
|
|
ebb1(v1: i32):
|
|
v2 = iconst.i32 1
|
|
v3 = iconst.i32 2
|
|
v4 = iadd v2, v3
|
|
[SBzero#18] brz v1, ebb2(v1)
|
|
v5 = isub v1, v2
|
|
[UJ#1b] jump ebb1(v5)
|
|
|
|
ebb2(v6: i32):
|
|
[Iret#19] return v6
|
|
|
|
}
|
|
; sameln: function %critical_edge
|
|
; nextln: ebb0(v0: i32, v7: i32):
|
|
; nextln: brnz v7, ebb3(v0)
|
|
; nextln: return v0
|
|
; nextln:
|
|
; nextln: ebb3(v8: i32):
|
|
; nextln: v2 = iconst.i32 1
|
|
; nextln: v3 = iconst.i32 2
|
|
; nextln: v4 = iadd v2, v3
|
|
; nextln: jump ebb1(v8)
|
|
; nextln:
|
|
; nextln: ebb1(v1: i32):
|
|
; nextln: brz v1, ebb2(v1)
|
|
; nextln: v5 = isub v1, v2
|
|
; nextln: jump ebb1(v5)
|
|
; nextln:
|
|
; nextln: ebb2(v6: i32):
|
|
; nextln: return v6
|
|
; nextln: }
|