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Support heaps with no offset-guard pages.

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Also, say "guard-offset pages" rather than just "guard pages" to describe the
region of a heap which is never accessible and which exists to support
optimizations for heap accesses with offsets.

And, introduce a `Uimm64` immediate type, and make all heap fields use
`Uimm64` instead of `Imm64` since they really are unsigned.
This commit is contained in:
Dan Gohman
2018-11-29 04:53:30 -08:00
parent 93696a80bb
commit a20c852148
27 changed files with 302 additions and 172 deletions
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2
cranelift/filetests/regalloc/aliases.clif
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@@ -3,7 +3,7 @@ target x86_64 haswell
function %value_aliases(i32, f32, i64 vmctx) baldrdash {
gv0 = vmctx
heap0 = static gv0, min 0x0001_0000, bound 0x0001_0000_0000, guard 0x8000_0000
heap0 = static gv0, min 0x0001_0000, bound 0x0001_0000_0000, offset_guard 0x8000_0000
ebb0(v0: i32, v1: f32, v2: i64):
v3 = iconst.i32 0

4
cranelift/filetests/regalloc/coalescing-207.clif
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@@ -7,7 +7,7 @@ target x86_64 haswell
function %pr207(i64 vmctx, i32, i32) -> i32 system_v {
gv1 = vmctx
gv0 = iadd_imm.i64 gv1, -8
heap0 = static gv0, min 0, bound 0x5000, guard 0x0040_0000
heap0 = static gv0, min 0, bound 0x5000, offset_guard 0x0040_0000
sig0 = (i64 vmctx, i32, i32) -> i32 system_v
sig1 = (i64 vmctx, i32, i32, i32) -> i32 system_v
sig2 = (i64 vmctx, i32, i32, i32) -> i32 system_v
@@ -1036,7 +1036,7 @@ ebb92(v767: i32):
; Same problem from musl.wasm.
function %musl(f64 [%xmm0], i64 vmctx [%rdi]) -> f64 [%xmm0] system_v {
gv0 = vmctx
heap0 = static gv0, min 0, bound 0x0001_0000_0000, guard 0x8000_0000
heap0 = static gv0, min 0, bound 0x0001_0000_0000, offset_guard 0x8000_0000
sig0 = (f64 [%xmm0], i32 [%rdi], i64 vmctx [%rsi]) -> f64 [%xmm0] system_v
fn0 = u0:517 sig0

2
cranelift/filetests/regalloc/coloring-227.clif
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@@ -3,7 +3,7 @@ target x86_64 haswell
function %pr227(i32 [%rdi], i32 [%rsi], i32 [%rdx], i32 [%rcx], i64 vmctx [%r8]) system_v {
gv0 = vmctx
heap0 = static gv0, min 0, bound 0x0001_0000_0000, guard 0x8000_0000
heap0 = static gv0, min 0, bound 0x0001_0000_0000, offset_guard 0x8000_0000
ebb0(v0: i32, v1: i32, v2: i32, v3: i32, v4: i64):
[RexOp1pu_id#b8] v5 = iconst.i32 0

2
cranelift/filetests/regalloc/reload-208.clif
View File

@@ -13,7 +13,7 @@ target x86_64 haswell
function %pr208(i64 vmctx [%rdi]) system_v {
gv1 = vmctx
gv0 = iadd_imm.i64 gv1, -8
heap0 = static gv0, min 0, bound 0x5000, guard 0x0040_0000
heap0 = static gv0, min 0, bound 0x5000, offset_guard 0x0040_0000
sig0 = (i64 vmctx [%rdi]) -> i32 [%rax] system_v
sig1 = (i64 vmctx [%rdi], i32 [%rsi]) system_v
fn0 = u0:1 sig0